[Openchrome-devel] [Bug 99351] New: Screen looks strange

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Jan 10 21:19:45 UTC 2017


            Bug ID: 99351
           Summary: Screen looks strange
           Product: xorg
           Version: unspecified
          Hardware: x86 (IA32)
                OS: All
            Status: NEW
          Severity: minor
          Priority: medium
         Component: Driver/openchrome
          Assignee: openchrome-devel at lists.freedesktop.org
          Reporter: gajdipajti at gmail.com

Created attachment 128867
  --> https://bugs.freedesktop.org/attachment.cgi?id=128867&action=edit
1) What I see.

Dear Developers,

I am trying to bring my old laptop (Fujistu Siemens Amilo L7320) back to life.
It has a Via Unichrome GPU (I think P4M800). I hope you can give me some
advice, how I can solve this problem.

My problem is with the display (see attached picture). It looks like it has a
strange layer of a static color noise. The pattern only changes a bit between
reboots and if I maximize/minimize an application (see second attached
picture). (On FreeBSD 10.x it even got stanger, I saw a Windows XP logo on this
"noise layer".) With the VESA driver, I don't have this issue.

With XP and Ubuntu 10.04 I don't have this issue. I think from Xubuntu 12.04 to
16.04 the VESA driver was used on my laptop, so I don't know when it went

Now I tried FreeBSD 10.2 and 10.3 with the unichrome driver, and Lubuntu 17.04
(to test unichrome v0.5.0) but I got the same results for each of them. This
screen issue. If I switch to VESA, this layer disappears.

I included my current xorg.conf, which I wrote to enable openchrome driver on
17.04 and correct the screen resolution for the laptop.
(I had to add some extra modules, because X failed to start. The problem in
Xorg.0.log was "undefined symbol:" like shadowremove, vgahwfreehwrec, ... These
were not loaded automatically. I also tested some additional options suggested
by forums and the man page, but they are now commented out.)

I included my latest Xorg.0.log also.

Can you give me some advice what to try? Or how to debug this problem?

I will test the machine with Lubuntu 12,04, 14.04 and 16,04. Maybe I can narrow
down which versions are working and which aren't and give a follow-up. 

Thank you for reviving the the openchrome project.

Regards, Thomas

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