OESF Portables Forum
Model Specific Forums => Cosmo Communicator => Cosmo Communicator - Hardware => Topic started by: Tom D on November 15, 2018, 10:43:18 am
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My biggest hope is that there is an improvement in the functionality of the USB-C ports. I have the USB-C hub, and you can choose to either charge through it (making the hub unnecessary), or use it as a hub without charging. I am using the Gemini with a Sentio SuperBook which only supports USB-on-the-go video (no HDMI input), so this means I can only use the Gemini with it on Battery Mode. It would be REALLY nice if one of the ports was a full USB-C port that supported true HDMI out, USB peripherals and charging, like most laptop USB-C ports do - e.g., Macbook. That might be too much to ask, so any improvement in the USB-C ports would be appreciated.
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Update #8 did mention that both USB-C ports would be able to charge (whereas the Gemini will only charge on the left hand side) but not yet seen any acknowledgement of the Cosmo ports being USB Power Delivery compatible. The Gemini USB hub does support USB Power passthrough making it rather frustrating that the Gemini itself doesn't. Being able to use the HDMI output of a standard/generic USB-C hub would be nice but not sure this will happen, the statements that the Gemini HDMI adapter will work with the Cosmo suggests not. The lack of exFAT support in Android can be a bit awkward but I suspect Planet won't be able to afford the cost of licensing the exFAT driver from Microsoft. I get around by booting into Linux when I need to access an exFAT formatted drive.
As a side note the Gemini will charge from a USB-C charger if you plug it in whilst it is switched off but it won't pull more than 500mA@5V so even switched off it will charge very slowly. It will continue to charge if you turn it on but I doubt that 500mA would be enough to charge the Gemini as well as run it.
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I was very happy to hear that both ports can charge. I already have an HDMI adapter from the Gemini I can use, so I can now charge and output HDMI. This now lets me "dock" the Communicator at home, which is nice.
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Don't get me wrong. Charging through both ports is going to be way easier when connecting it up for the night on the bedside table. No longer will we have to figure out which side the hinge is on, orient the device then make sure we're plugging into the left hand side.
However, I'm still a bit concerned as to whether they have taken on and fixed the Gemini's face palm USB C issue.
Gemini
Right port is able to:
-USB C direct to device - cannot run a hub - not good to charge through (no fast charging).
-HDMI adapter for external monitor
Left port is able to:
-Fast Charge via the included USB C power adapter
-USB C hub to devices (Keyboard, mouse)
The problem is that the left port is an OR. Despite the Planet Computers hub having a USB C power inlet on the hub - that power is only usable by the client devices connected to the hub. It is incapable of charging or powering the Gemini back through the hub. So, with the two ports and their caveats it winds up being a case of:
Gemini Pick Two Conundrum:
-supply power to the Gemini
-connect keyboard & mouse
-connect to an external monitor
To operate as a 'desktop replacement', the Cosmo is going to have to do (at minimum) those three things - at the same time.
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In addition to that:
Only the left side USB port of the Gemini is USB3 (and still slow). According to benchmarks the right side port is USB2 only. Both ports of the Cosmo should be USB3, well and faster than the left side port of the Gemini.
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At least for me, also the right side of the Gemini supports the hub.
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At press release picture there is no adapter like Gemini had, so is it.....
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At press release picture there is no adapter like Gemini had, so is it.....
But in their store it says the adapter is compatible with the Cosmo though...
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Got to say it would be really nice if we could have a USB hub connected to mouse, keyboard, monitor, external storage, and possibly wired ethernet. We could then connect one USB-C to be attached to everything. If we could receive power through the same USB-C that would definitely be a bonus.
This is definitely within the capabilities of USB-C. My girlfriend can connect her MacBook to an EGPU box that's connected to external monitor, keyboard, mouse and provides accelerated graphics. Her MacBook is a little old, so she's using a Thunderbolt 2 to Thunderbolt 3 (USB-C) converter, which doesn't support charging. However, at some point she'll get a new MacBook, which will give USB-C charging through the same port.
The Cosmo may not be quite it, but at some point I could definitely see a Gemini/Cosmo sized device offered as a true desktop replacement, and for that to be accepted, connecting a single connector to convert to desktop mode would definitely make it a lot more appealing.
One minor point, but for this to be mainstream and not a nice enthusiast device, we need to get away from quirks like you must charge from the left port and you can only connect the monitor to the right one. For it to be mainstream, it needs to take the approach, "if the connector fits, it will work".
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While I agree with "if it fits, it should work", I am afraid USB 2/3/3.1/3.2/4/... type C, is a [set of] standard
, where that, quite often, just won't be true.
Special connectors historically increased the chance of "if it DOES fit, it might work", though, given all the ways DB-25 RS-232 or SCART cables could be wired, or not, it was still plug-and-pray. USB type A and B, mini, micro etc. tended to reverse the issue, "it WOULD have worked, had only the connectors been the same size". So, USB-C to the rescue? Well, for the "Universal Serial Bus" itself, sort of. If the connector fits, some USB data transfer is likely to happen. But the ALT modes, such as HDMI, DisplayPort or Thunderbolt, may or may not work, depending on which optional wires and/or chips happens to be present or not in the cable, which may or may not be marked to indicate such presence and/or absence. And even when USB-C works, it may not work well. I have a slim Apple brand USB-C cable, meant to be a laptop power cord, so while it handles 100W Power Delivery, it only supports USB 2.0 data speeds, but it doesn't SAY that anywhere, nor does any device. It just works, but quite slowly. A USB-C cable may have a chip, telling how much power it handles, but humans can only guess. A cable that charges a phone just fine, may not charge a laptop at all.
Everything, thus far, has presumed everybody sticks to the USB standards and the USB standards only... but they're not even trying. The official ALT mode for HDMI over USB-C, requires certain chips in the cable, but Planet Computers chose to achieve the same end result via other means, requiring THEIR adapter cable. My Apple USB-C Power Delivery AC brick is MARKED with 20.3V 3A / 9V 3A / 5V 2.4A and happily gives 60W to my Dell laptop, but won't even begin charging my Gemini. Unless the device asks for 9V, the brick doesn't seem to care. The Gemini CAN ask for 9V, but only according to the MediaTek PumpExpress standard, not USB Power Delivery. My Dell USB-C docking station can deliver a 130W to the laptop, once a secret handskake has enabled its non-standard 19.5V 6.7A mode. When I plug my Gemini in, it sees the MIDI keyboard plugged into the USB hub of the docking station, but power? Nope! In spite of ONLY being marked 19.5V, it will give 9V to my Samsung phone.
I've heard of about seven different fast charging "standards", several of which comes in multiple versions. So, when things gets messy, I don't think we can ONLY blame Planet Computers, because USB type C is already, by specification, quite messy. And then third parties adds to that...
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Too true, the USB-C connector has been a great success in reducing the number of different connectors we have to manage but there are so many different variations that it is impossible to assume it will work even if the connector fits. This is as true for laptops and desktops as it is for phones, tablets and the Gemini/Cosmo.
Asking about the USB PD support I received the message that Cosmo should support Power Delivery but it can't be confirmed until launch. So very hopefully Cosmo will cover this last Gemini shortfall...
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Okay, I take your point, I wouldn't expect ANY USB-C device to work with the Cosmo. For example, I'm not sure we can ever expect a EGPU to be compatible. I was more thinking of if a supported device fits the connector it should work. Users shouldn't be expected to remember that certain things must be connected to the left port, while others will only be accepted by the right port.
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Left and/or right side USB-C port charging?
Page 8 in the Cosmo Quick Start Guide (LOL), USB-C Ports, shows "R" right side with "regular charging".
However, it also says "Only specific combinations of left and right USB-C functions available."
WTH does that implied limitation / restriction (CYA) caveat mean?
My Cosmos DOES NOT charge through the right side USB-C port.
I guess that is what that asterisk means.
Ifanafi
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Left and/or right side USB-C port charging?
Page 8 in the Cosmo Quick Start Guide (LOL), USB-C Ports, shows "R" right side with "regular charging".
However, it also says "Only specific combinations of left and right USB-C functions available."
WTH does that implied limitation / restriction (CYA) caveat mean?
My Cosmos DOES NOT charge through the right side USB-C port.
I guess that is what that asterisk means.
Ifanafi
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Both ports will charge the Cosmo, though I have not yet determined if one is fast charge and the other is 5v 2a only. It wont establish a USB slave connection on the right port (no mtp or usb debugging to a pc), only acts as a host port (mice, jump drives, etc). The left port can be used for slave connections as well as as a usb host port. The right port is the only port that works with the display port cable (actually need to verify this by testing the other side, i didn't). Finally both ports work fine with type C hubs. Hubs with type-c to video out do not appear to work on the cosmo, so its likely the display dongle they provide with the proprietary wiring is still the only option in town other than displaylink.
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Both ports will charge the Cosmo, though I have not yet determined if one is fast charge and the other is 5v 2a only. It wont establish a USB slave connection on the right port (no mtp or usb debugging to a pc), only acts as a host port (mice, jump drives, etc). The left port can be used for slave connections as well as as a usb host port. The right port is the only port that works with the display port cable (actually need to verify this by testing the other side, i didn't). Finally both ports work fine with type C hubs. Hubs with type-c to video out do not appear to work on the cosmo, so its likely the display dongle they provide with the proprietary wiring is still the only option in town other than displaylink.
They have stated somewhere/sometime that both ports support charging, but only one side (the left?) support fast charging...
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My very quick test this morning shows that the Cosmo won't throw its hands up with a USB-C charger. Results so far..
USB-C charger to left port approx. 2.7A @ 5V
USB-C charger to Planet USB Hub (one from my Gemini) into left port 0.75A @ 5V (Cosmo does state it is charging but I suspect at 0.5A, the rest is for the hub)
USB-C charger to right port doesn't seem to charge
Haven't actually tried the Pump Express charger in the box or a standard USB-A charger to compare against (I assume USB-A chargers are required for the right hand port). The hub result is interesting, clearly passthrough is working on Cosmo but why the charge is so low I am not sure. Will try some other USB-C hubs over the coming days.
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Left and/or right side USB-C port charging?
My Cosmos DOES NOT charge through the right side USB-C port.
Both ports will charge the Cosmo, though I have not yet determined if one is fast charge and the other is 5v 2a only.
Maybe you are both correct?
I have found both ports to charge when the Cosmo Communicator is turned on, but only one charges when the device is turned off.
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I recently got one of these portable monitors that can do USB-C as well as HDMI.
Initial experimentation:
Works fine with HDMI using the Gemini USB-C to HDMI dongle, as expected.
USB-C does not work.
I didn't know what Developer Options : Simulate Secondary Display was for. Turns out it has nothing to do with this, and caused my Cosmo to freeze. When it came back it was overlaying a mirror of its own display, half size in the corner (and that included the overlay, so it kind of recursed off to infinity). After first reboot it became unresponsive quickly. After second reboot I managed to get back to developer options and turn this option back off. Apparently it's for developers to be able to simulate what their stuff will look like on a different sized display. I recommend not messing with this.
I suspect USB-C direct to display will never work. On the other hand, this monitor has several options about how it handles DP over USB-C (different protocols mainly), so perhaps I'll do a bit of testing, though I am not hopeful.
Ultimately I *am* hoping that we will at least be able to use the display as a second display instead of just a mirror of the main display, at least in linux if not in Android.
Charbax had a video of the Planet team showing this at a trade show booth using OXI way back in Feb.
Does anyone from the Gemini world have any experience with getting a second display to work? Has anyone used OXI or Leena or Sentio?
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Does anyone from the Gemini world have any experience with getting a second display to work? Has anyone used OXI or Leena or Sentio?
As expected...
With the Gemini with the propietary Adapter it works out of the box (afaik mirror only, but don't know for sure, using Debian mainly). With Linux using the adapter is not possible (yet) and required changes to the hwcomposer driver. So don't expect to get this working soon.
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Assuming the Cosmo's motherboard is similar to the Gemini's, it was a well know fact that the motherboard did not support HDMI out. The proprietary adapter for the Gemini (which I have also used with the Cosmo) does the magic of converting the USB to HDMI. So a normal USB-C to HDMI adapter will not work,
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So what's the relationship between the cover display, and the right USB C port?
I have:- Google/Foxconn USB A to C adaptor
- Supplied "PumpCharge" USB A charger (but USA plug, can't use because Australia - no compatible options were offered so I went with the one that'd be next most useful)
- Huawei USB C charger (from my Nexus 6P)
- Lenovo USB C charger (my work notebook)
- Belkin USB C charger (car)
- Small, cheap USB A mouse
If I try to charge, screen on or off, via the right port, nothing happens.. zip.. nada.. nothing.. not even a slow charge.. with any of the above chargers..
Left port.. charging is fine on all of them.
If I :- Connect mouse with A-C adaptor to left port: WORKS
- Connect mouse with adaptor to right port and cover display off: FAILS (powers on but does not register)
- Connect mouse with adaptor to right port and cover display on: WORKS (powers on and functions)
- Connect mouse with adaptor to right port and cover display on, then turn cover display off after connecting: WORKS
- Connect mouse with adaptor to right port and cover display on, then turn cover display off, then remove mouse: Weird noise coming out of the speakers like a CPU stuck in a high speed loop inducing interference
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On my CC the USB-C to HDMI Cable doesn't work, I don't get any image on my HDMI monitor (standard PCB). Also regular charging doesn't work at the right hand side. The charging I only tested when my CC was shutdown completely.
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I haven't received my Cosmo yet , so can't confirm any behaviour discussed here, but as for charging on RHS, Indienogo update from 16/12/2019 includes the statement:
"1. New settings: switch OFF cover display on power down
This feature helps saving battery when Cosmo Communicator is powered down by switching OFF the cover display. When powered down in this way, you will only be able to switch on your Cosmo using the Esc key and charge your Cosmo using the left hand side USB-C port. We continuing to look into further power saving firmware possibilities. "
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I haven't received my Cosmo yet , so can't confirm any behaviour discussed here, but as for charging on RHS, Indienogo update from 16/12/2019 includes the statement:
"1. New settings: switch OFF cover display on power down
This feature helps saving battery when Cosmo Communicator is powered down by switching OFF the cover display. When powered down in this way, you will only be able to switch on your Cosmo using the Esc key and charge your Cosmo using the left hand side USB-C port. We continuing to look into further power saving firmware possibilities. "
And that MIGHT affect the HDMI-output as well...
(And people have reported that the special Gemini/Cosmo USB-C to HDMI only works when plugged in one way, it does nothing the other way. Might have something to do with the fact that it is a special cable for Planet, and it might not be wired to work both ways...)
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On my CC the USB-C to HDMI Cable doesn't work, I don't get any image on my HDMI monitor (standard PCB). Also regular charging doesn't work at the right hand side. The charging I only tested when my CC was shutdown completely.
Assuming you are using the PC supplied one... I have had very mixed results with it. Some HDMI monitors work fine, others not at all, yet others needed me to reboot the Gemini / Cosmo and pray to the HDMI gods. Sometimes hoppig on one foot while reciting the alphabet backwards seemed to help... I've never been able to get it to work with a HDMI to DVI adaptor (for monitors that only had DVI).
In the end I decided to get a DisplayLink USB to HDMI adaptor. It uses a different technology and just works. Any monitor, all the time, with DVI adaptos or anything. It is a tiny bit bulkier than the PC adaptor, but it's a small price to pay for something that works 100% of the time. The only issue is it works only on the LH USB-C port (opposite of the PC HDMI adaptor) so you can't charge it at the same time. On the plus side, it also wirks through a USB hub, so you can have an external display, a keyboard, mouse etc... Just no charging...
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Does anyone with a good understanding on how PCBs work have any idea what could be going on on the Cosmo re charging? It's so strange. For me the RH USB-C port charges (though slowly) when the device is powered up and the COD is on. "Great!" I think. "Finally I'll be able to connect peripherals on the LH port through a USB hub and charge through the RH port".
Nope! As soon as I connect a hub to the LH port, the CC stops charging off the RH port. I know very little about how modern PCBs charge. I do understand there is a lot of "smarts" in it, but it baffles me why plugging something in one port would stop the other from charging.
To make matters stranger (but in a good way) the LH port DOES seem to charge through a USB hub (unlike the Gemini). At least this means that I can supply some juice to the CC while using peripherals.
It is all very strange though!
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Does anyone with a good understanding on how PCBs work have any idea what could be going on on the Cosmo re charging? It's so strange. For me the RH USB-C port charges (though slowly) when the device is powered up and the COD is on. "Great!" I think. "Finally I'll be able to connect peripherals on the LH port through a USB hub and charge through the RH port".
Nope! As soon as I connect a hub to the LH port, the CC stops charging off the RH port. I know very little about how modern PCBs charge. I do understand there is a lot of "smarts" in it, but it baffles me why plugging something in one port would stop the other from charging.
To make matters stranger (but in a good way) the LH port DOES seem to charge through a USB hub (unlike the Gemini). At least this means that I can supply some juice to the CC while using peripherals.
It is all very strange though!
Are you sure it actually stops charging, and not only stops DISPLAYING that it is charging??
It was always possible to "charge" the hub itself on the Gemini as well, so you could use the hub and only consume battery directly on the Gemini (and not consume from the peripherals; it's the only way I could connect a 2 TB drive to the Gemini, and not having it shut down on me...). But definitely a big improvement if it actually charges through the hub as well. And is it not possible to get the Display Link adapter to function on/through the hub??
PS: Have you tried standing on your head, when trying to get the HDMI-adapter to work? Might be less tiresome, and it should be easier to operate the Gemini/Cosmo when not moving around so much... Of course then you would have to turn the display upside down as well, and that might also be difficult at times...
(Yes, as I've said as well before, sometimes it seems to be some "magic" you need to do, to get certain things to work on the Gemini. And make sure you don't have any voice-assistant working when reciting the alphabet backwards... Or is that actually also a requirement to get it to work )
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@Spook: I use the official Gemini USB-C to HDMI cable. I am going to test it with my TV. I am steel waiting for my dock and user guide. Of course also the pouch, but nobody has received it. Thanks a lot for your suggestion about the displaylink USB-C to HDMI adapter.
@MonkeyControl and gymbo: I never had a smartphone which requires that a phone should be powered on before charging was possible. Even before I installed the firmware upgrades I was unable to charge from the RH side port. I hope that you will receive very soon your CC.I will verify if my cover screen is active. I must admit that I did my test after the cover firmware upgrade+other firmware upgrade.
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HELP, please!
the right USB-C port on my Cosmo does absolutely nothing! Neither the power adapter nor any low power peripherie device (mouse) will be recognized while plugged in. Latest Android, no root.
Is the port defektive?
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HELP, please!
the right USB-C port on my Cosmo does absolutely nothing! Neither the power adapter nor any low power peripherie device (mouse) will be recognized while plugged in. Latest Android, no root.
Is the port defektive?
Mine won't charge if the cable is plugged in the wrong way around -- yes, this is a type-C which is allegedly immune to this problem, but it certainly makes a difference. I've no idea if that also affects devices -- I don't own any USB-C devices, only hosts -- but it might be worth trying.
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HELP, please!
the right USB-C port on my Cosmo does absolutely nothing! Neither the power adapter nor any low power peripherie device (mouse) will be recognized while plugged in. Latest Android, no root.
Is the port defektive?
It is stated higher up in the thread as well, but just be sure to eliminate the most obvious reason it might not work: The RH USB only works when the cover display is ON...
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HELP, please!
the right USB-C port on my Cosmo does absolutely nothing! Neither the power adapter nor any low power peripherie device (mouse) will be recognized while plugged in. Latest Android, no root.
Is the port defektive?
It is stated higher up in the thread as well, but just be sure to eliminate the most obvious reason it might not work: The RH USB only works when the cover display is ON...
Yippii! With CODI on, charging works! Thank you very much!
Happy New Year @all
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Does anyone with a good understanding on how PCBs work have any idea what could be going on on the Cosmo re charging? It's so strange. For me the RH USB-C port charges (though slowly) when the device is powered up and the COD is on. "Great!" I think. "Finally I'll be able to connect peripherals on the LH port through a USB hub and charge through the RH port".
Nope! As soon as I connect a hub to the LH port, the CC stops charging off the RH port. I know very little about how modern PCBs charge. I do understand there is a lot of "smarts" in it, but it baffles me why plugging something in one port would stop the other from charging.
To make matters stranger (but in a good way) the LH port DOES seem to charge through a USB hub (unlike the Gemini). At least this means that I can supply some juice to the CC while using peripherals.
It is all very strange though!
I still can't quite get my head around how these USB ports work. In addition to the above, if you have peripherals plugged into the RH USB port and try to charge via the LH port, the RH port will immediately disconnect and no other devices will work in either port until you reboot. It's like the charging circuit shorts out the USB or something?
Oh and if I have a USB hub plugged into the LH port with a couple of peripherals and I plug something into the RH port, the LH port stops working... So why have 2 ports?
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Does anyone with a good understanding on how PCBs work have any idea what could be going on on the Cosmo re charging? It's so strange. For me the RH USB-C port charges (though slowly) when the device is powered up and the COD is on. "Great!" I think. "Finally I'll be able to connect peripherals on the LH port through a USB hub and charge through the RH port".
Nope! As soon as I connect a hub to the LH port, the CC stops charging off the RH port. I know very little about how modern PCBs charge. I do understand there is a lot of "smarts" in it, but it baffles me why plugging something in one port would stop the other from charging.
To make matters stranger (but in a good way) the LH port DOES seem to charge through a USB hub (unlike the Gemini). At least this means that I can supply some juice to the CC while using peripherals.
It is all very strange though!
I still can't quite get my head around how these USB ports work. In addition to the above, if you have peripherals plugged into the RH USB port and try to charge via the LH port, the RH port will immediately disconnect and no other devices will work in either port until you reboot. It's like the charging circuit shorts out the USB or something?
Oh and if I have a USB hub plugged into the LH port with a couple of peripherals and I plug something into the RH port, the LH port stops working... So why have 2 ports?
Well, it DID work on the Gemini, although you couldn't charge through the hub, so if it is a hardware change, or on the software side, I haven't got any idea. But hope it is software related, as that could still be corrected...
But it sounds strange that it would even get through the prototype stage with that kind of problems. Should really be something that should be tested, that both USB ports works at the same time, and the same with charging and use of USB port!!?!
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I still can't quite get my head around how these USB ports work.
I think they keep changing with the firmware updates with regards to charging, initially they appeared to charge on either side but slowly on the one side! then it would only charge on one side & now it charges on both sides again!!!
All seems to be part of the fun
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*deleted the last post from "mmbika"
Please stay focused on the topic and do not bring your own ideology and politics into this forum.
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[/quote]
Well, it DID work on the Gemini, although you couldn't charge through the hub, so if it is a hardware change, or on the software side, I haven't got any idea. But hope it is software related, as that could still be corrected...
But it sounds strange that it would even get through the prototype stage with that kind of problems. Should really be something that should be tested, that both USB ports works at the same time, and the same with charging and use of USB port!!?!
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I have been doing some tests with my Cosmo re USB-C connectivity.
I have a Verbatim USB-C travel mouse that worked just fine with the Gemini, although I only use it in the right USB-C port (never tested in left port, as I am right-handed). I tried it on the Cosmo and it didn't work in either port! I then restarted the Cosmo and it works in both ports.
I recently bought a NexDock 2 via Kickstarter. It is really hit and miss if the Cosmo recognises it using the official Planet HDMI adaptor.
The only way I can get the Cosmo to see the NexDock's keyboard and touchpad is to connect it via the Planet USB-C dock. The final result is a bit messy, as I also need to plug in two cables to the Planet dock.
It would be really nice if I only had to plug in one USB-C cable to get video, keyboard and trackpad working, but that is currently only supported with Samsung and Huawei devices (Pixel coming soon).
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I picked up an HP Travel Dock on eBay:
https://support.hp.com/au-en/product/hp-usb...74/product-info (https://support.hp.com/au-en/product/hp-usb-c-travel-dock/10127474/product-info)
This works in both Cosmo USB-C ports and provides HDMI or VGA (not at the same time), plus 2 x USB3 ports, which support USB drives and keyboard/mouse.
The Ethernet port does not work under Android, but I'm not really bothered about that.
So I can keep my fast charger connected in the left hand port and then the HP Travel Dock in the right hand port!
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What you good people do get audio out of HDMI cable? I haven't found anything but heard that while using USB-C HDMI cable, audio is not rooted to phone speakers and you get muted if your monitor has no audio.
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What you good people do get audio out of HDMI cable? I haven't found anything but heard that while using USB-C HDMI cable, audio is not rooted to phone speakers and you get muted if your monitor has no audio.
I searched and have discovered a temporarily a solution to audio problem is to use a HDMI to VGA out adapter with 3.5mm audio out and connecting to monitor or display via VGA.
Now I have some more questions
(1) As there is no USB style eject for HDMI, how should it be disconnected from Cosmo & Monitor properly? Should monitor be turned off and just pull out the cable from Cosmo or first pull out the cable from Cosmo or should Cosmo be closed (sleeping and then slowly disconnect the cable?) Aim is to avoid any possible issues which may be arising out of it
(2) What will be maximum supported display resolution if HDMI is connected to say 4K monitor in Android and/or in Debian?
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What you good people do get audio out of HDMI cable? I haven't found anything but heard that while using USB-C HDMI cable, audio is not rooted to phone speakers and you get muted if your monitor has no audio.
I searched and have discovered a temporarily a solution to audio problem is to use a HDMI to VGA out adapter with 3.5mm audio out and connecting to monitor or display via VGA.
Now I have some more questions
(1) As there is no USB style eject for HDMI, how should it be disconnected from Cosmo & Monitor properly? Should monitor be turned off and just pull out the cable from Cosmo or first pull out the cable from Cosmo or should Cosmo be closed (sleeping and then slowly disconnect the cable?) Aim is to avoid any possible issues which may be arising out of it
(2) What will be maximum supported display resolution if HDMI is connected to say 4K monitor in Android and/or in Debian?
Doesn't matter how you disconnect the adaptor/tv
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How does your Cosmo charge with different chargers? I tried using a different charger (this one: https://www.axagon.eu/en/produkty/acu-pq22) (https://www.axagon.eu/en/produkty/acu-pq22)) and it seems slower then the one from Planet Computers.
It has USB-A and USB-C, I tried both and in an hour, I would get like 20 % increase in battery at most. USB-C supports USB-PD, so I would expect it to be quick. I will experiment with a different cable.
As for USB-A, what can I expect if it does not support PumpExpress but only quickcharge?