Author Topic: Screen flickering.. (Read 53943 times)

Laze · « **Reply #15 on:** November 22, 2004, 01:48:10 pm »

We look forward to it - btw. don't give up at first - you might need to do several reboots and settings. As i wrote the best way i found for testing was to run Dillo in maximized window in "pda" mode. Hope it works :-)

DaveAnderson · « **Reply #16 on:** November 25, 2004, 01:26:17 pm »

I've gotten it fairly close to perfect. However, when I switch to portrait mode, I get shadows. Does this mean I have to keep adjusting?

Laze · « **Reply #17 on:** November 25, 2004, 01:32:03 pm »

Yes - bascially if you get the Portrait mode running - then normal mode should be okay too..

Bundabrg · « **Reply #18 on:** December 04, 2004, 04:56:59 am »

Chuckle, been away for a while and came back to see this thread. Glad to see that perhaps the 'flickering problem' has a solution ;-)

- Bundabrg

wookie · « **Reply #19 on:** December 22, 2004, 09:54:13 am »

Hi @all,

What means 'flickering' in your postings?
I use tkcROM and noticed that with dark background there are light stripes going from the right site to the left site of the display, as is the case for osziloskop.
When I switch to max. background light then the flickering is gone or not to see.

Is it that what you mean?

thx for any help!

regards
Dirk

ScottYelich · « **Reply #20 on:** December 22, 2004, 02:08:33 pm »

I think it can best be described as "shivering" and it tends to be visible
on vertical lines such as those on the left side of an aterm/xterm, etc.

Mostly, it occurs on the left side of the display.

It appears to be some sort of timer/timing issue with the driver and
I think it's been investigated and mostly addressed/resolved --
but it takes manual intervention to rememdy.

Scott

Bundabrg · « **Reply #21 on:** December 24, 2004, 12:05:29 am »

If your settings are wrong it can also seem like a ... doubling up of lines. IE, instead of seeing a line across a screen, you may see a line and a ghost line near it. I got that when I reset my settings.

However, the shimmering is the most common problem, and I've seen in in pdaXrom and in GPE, both X environments.

- Bundabrg

bam · « **Reply #22 on:** January 02, 2006, 01:41:43 pm »

stock rom(tetsu kernel)
lcd phase 7
com 13

Deviant25 · « **Reply #23 on:** January 03, 2006, 01:01:39 am »

Can these settings changed be used to remove that ghost lines/image that appear above things? if so which would help it more com or phase?

Charlovski · « **Reply #24 on:** January 03, 2006, 01:52:49 pm »

Quote

Can these settings changed be used to remove that ghost lines/image that appear above things? if so which would help it more com or phase?
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About a year ago I also mentioned the problem I had with ghost lines (Sharp rom). I tried to remove them with com/phase manupilation.. it didn't help me then. While reading this topic today I decided to give it another go and yes .. for the first time I had my Z I got rid of the ugly ghost lines by adjusting the phase from 0 to 7. So adjust phase in case of ghost problems and com in case of screenflickering I would say.

bam · « **Reply #25 on:** January 03, 2006, 03:15:42 pm »

are the lines/ghosting from the lcd being driven too hard? anyone know? or is it a sync problem? any more details?

Michalis · « **Reply #26 on:** August 12, 2006, 01:47:26 pm »

hi, thx for help.. fixed the flickering
C860-OZ3.5.4.1

COM ADJ setting: 105 (was 118)
&
LCD Phase Setting 4

Basic-Master · « **Reply #27 on:** October 06, 2006, 03:01:35 pm »

Hrm, none of the things above seem to work for me It keeps flickering just like before, I cant't see any changes... Today I got my first Zaurus, a C750 and installed U-Boot+pdaXrom on it but noticed the screen was flickering and tried to fix that with the tips above.. Unfortunately that didn't help at all Is there any another way to fix it?

Hrm.. But I've got a question to the devs.. This doesn't seem to occur while it's in portrait mode (or rotated), wouldn't it perhaps be better to just set the new screen size instead of resizing it with its own system functions when the X server starts? [span style=\'font-size:8pt;line-height:100%\']Sorry if that question is stupid, I'm just curious[/span]

Capn_Fish · « **Reply #28 on:** June 03, 2007, 10:04:43 pm »

I haven't ever gotten rid of the ghosting on my C3100. I've tried changing the phase, but it remains. Is there anything else I can try?

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Author Topic: Screen flickering.. (Read 53943 times)