5600 Preemptive ROM & VNCServer

[Tehas]

Has anyone else running the Preemptive / overclock ROMs noticed a problem with VNCServer?  When I start the Server I can see the Z from my workstation but many of the applications that I \"tap\" on fail to start or seg-fault.  This happens even if I use the stylus and tap on the physical screen.

After several tries the QT environment reboots back to the count-down screen but it doesn\'t come back - I have to flip the \"replace battery\" switch on the back of the unit.

I\'ve flashed back to the standard Sharp 1.32 ROM and it worked fine.  I\'ve un- and re-installed VNCServer and still no luck with the pre-emptive rom.

I posted to the SDGSystems forum but no responses in more than a week.

[derekp]

I\'ve tried the pre-emptive patches on my 5500 kernel, and noticed that a lot of the modules will need to be re-compiled against the patched kernel.  Things like \"ps\" segfaulting with the bluetooth drivers loaded, for example.  After recompiling the appropriate modules, the problems went away.  Don\'t know if it\'s the same problem with the 5600 pre-empt kernel or not.

[tumnus]

Yeah, I think that\'s the one problem I have noticed with this kernel.

Don\'t know what it is though. I\'ve recompiled the VNC kernel modules but that had no effect

[w4lna]

Not sure if I mentioned this before, but my digitizer totally stopped working with the overclock kernel.  It is fine with the standard preemptive kernel.

[rka]

Does this problem occur with the Preemptive Only ROM (i.e. without overclocking)?

[w4lna]

Does this problem occur with the Preemptive Only ROM (i.e. without overclocking)?

No, it\'s fine with the \"standard\" preemptive kernel.  The buttons still worked, I was able to bring up applications and shutdown, the digitizer just stopped working.

[rka]

Do the problems Tehas mentioned (i.e. VNC and seg fault issues) occur with the Preemptive Only kernel (i.e. without overclocking)?

[w4lna]

Do the problems Tehas mentioned (i.e. VNC and seg fault issues) occur with the Preemptive Only kernel (i.e. without overclocking)?

Don\'t know yet, installing VNC is on my list of things to do...  that and getting Kismet working.

[tumnus]

w4lna, did you try launching the Recalibrate app and went through the touchscreen calibration with the special kernel?

I have a feeling the VNC Server problem is down to the pre-emptive patch. I might remove it and see if it works again.

[w4lna]

w4lna, did you try launching the Recalibrate app and went through the touchscreen calibration with the special kernel?

I have a feeling the VNC Server problem is down to the pre-emptive patch. I might remove it and see if it works again.

Yes, I did try the Recalibrate app, but it wouldn\'t detect a screen press anywhere on the screen.  My unit may be a bit marginal, I had noticed some jittery-ness when I first tried the standard preemptive kernel, but recalibration has seemed to eliminate most of that.

Are the kernel/ROM build instructions archived somewhere now?
I\'ve converted my RH9 system to Fedora and would like to try
rebuilding the kernel myself.

[tumnus]

The general and special kernel building instructions are in the ZUG howtos.

[derekp]

Tumnus,
You may have to recompile all kernel modules that get loaded up.  I found that with the pre-empt patches applied, problems crop up in seemingly unrelated processes.
I\'m busy tracking down sources for all the modules that ship with OZ, not all of them ship with the kernel (of course, I know there is no source for the sd module, unfortunately).

[Murga]

I had a problem with copying files over 1Mb to my SD ... I flashed back to the latest Sharp ROM and it now works.

So more problems for the pre-emtive patch :-(

http://www.zaurususergroup.com/index.php?n...c&p=10124#10124

[tumnus]

You may have to recompile all kernel modules that get loaded up.  I found that with the pre-empt patches applied, problems crop up in seemingly unrelated processes.

Already tried that. There\'s only one kernel module with the VNC Server and that is to simulate keyboard input. The touchscreen is dealt with via a daemon process (which I recompiled just in case), but that didn\'t work either.

I\'m just beginning to think that if all these incompatability problems are being caused by the pre-emptive patch alone, it isn\'t worth it since it is the PXA250 workaround being turned off that is what gives the speed boost.

[Anonymous]

Does this help?
http://sourceforge.net/tracker/index.php?f...045&atid=434956

Using OZ3.2 fbvncserver from stable feed doesn\'t
register any keyboard/input events from the remote end.