Ubuntu
xorg-server package

Moorethread GPU driver support on Xorg

Bug #2024520 reported by Zhanglei Mao
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
xorg-server (Ubuntu)
Triaged
Wishlist
Unassigned

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).

Tags: focal
Revision history for this message
Zhanglei Mao (zhanglei-mao) wrote :
Revision history for this message
Daniel van Vugt (vanvugt) wrote (last edit ):

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
affects: xorg (Ubuntu) → xorg-server (Ubuntu)
Changed in xorg-server (Ubuntu):
importance: Undecided → Wishlist
Daniel van Vugt (vanvugt)
Changed in xorg-server (Ubuntu):
status: New → Triaged
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