[Bug 42852] radeon driver (also ati driver) works only once.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=42852

--- Comment #4 from sergio lenzi <lenzi.sergio at gmail.com> 2011-11-13 23:11:34 PST ---
> You can take a look at the KMS code and port the relevant changes to UMS.
> http://cgit.freedesktop.org/~airlied/linux/tree/drivers/gpu/drm/radeon?h=drm-fixes
> There isn't just a simple function to reset the chip, you need to reprogram the
> memory controller, the display hardware, etc.
> As your problem appears to be display related, I would take a look at the code
> in atombios_encoders.c and atombios_crtc.c in KMS and compare it to the code in
> atombios_output.c and atombios_crtc.c in the UMS tree.  Your chip is in the
> PALM family and has a DCE4.1 based display block.
> 

Thank you very much for the help..

Another work around is to reprogram gdm to not reset the X server
at the next login... 

As the Xserver works ok after power on, I need to use it only once..
of course I will not be able to suspend the notebook.

Sergio

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