[Openchrome-devel] [Bug 57527] New: no usable X11 on P4M800 (or similar) Chip

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=57527

          Priority: medium
            Bug ID: 57527
          Assignee: openchrome-devel at lists.freedesktop.org
           Summary: no usable X11 on P4M800 (or similar) Chip
          Severity: blocker
    Classification: Unclassified
                OS: Linux (All)
          Reporter: tg42 at gmx.de
          Hardware: x86 (IA32)
            Status: NEW
           Version: unspecified
         Component: Driver/openchrome
           Product: xorg

Since i have upraded to Ubuntu 12.10, i cannot get X11 into a usable state on
an Amilo L7320.

Symptoms: a raw X11 starts up with 4 horizontal black and red stripes.  These
stripes remain, whatever X client is started (lightdm login, xfxe4 desktop),
although parts of what these clients draw is visible.  (So i can see the login
panel, login, and get some parts of the desktop.

A screenshot does NOT show these stripes, however.

If the HW-mouse is not disabled, some artifacts can be seen around the mouse
cursor.

I have tried to switch off more or less everything within reach (dri, glx,
composition, acceleration, AGPDMA, Virtual Command Queue) and switched between
XAA and EXA and different colour depths, but the results are always exactly the
same.  (Except for the SW mouse cursor and differently colored artifacts with
15 bit color depth. ;-)

Trying to switch on VBE modes crashes either X11 or the whole of the machine.

Is there any configuration switch i can change that slipped my attention?  What
kind of information is needed to track down the problem?

Any help appreciated

- Thomas

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