Please propose the fix upstream first:
https://gitlab.freedesktop.org/xorg/xserver/-/blob/master/hw/xfree86/common/xf86pciBus.c
The fix should be released in Ubuntu 23.10, 23.04 and 22.04 before we
consider 20.04.
** Tags added: focal
** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu)
** Changed in: xorg-server (Ubuntu)
Importance: Undecided => Wishlist
** Changed in: xorg-server (Ubuntu)
Status: New => Triaged
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https://bugs.launchpad.net/bugs/2024520
Title:
Moorethread GPU driver support on Xorg
Status in xorg-server package in Ubuntu:
Triaged
Bug description:
During our test for moorethreads GPU on Ubuntu 20.04 with
lightdm+gnome+xorg desktop environment, we found that it can load DDX
with mtgpu.drv.so, but during screen locking, the lightdm will start a
new Xorg to display a greeter, this new Xorg would match a driver of
modesettings_drv.sio instead of a correctly one mtgpu_drv.so.
After debuging, we found the root cause is that
xf86VideoPtrToDriverList function of Xorg is absent support for
moorethreads GPU, there is a patch to fix this and hope it can be
merged to Ubuntu release (20.04 LTS and following).
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