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Message #02244
[Bug 2111684] Re: [SRU] Xorg AMD platform A + N config selected wrong primary GPU
Verify below scenarios on 25.04 with libpciaccess0 0.17-3ubuntu0.25.04.1
Under Xorg session:
Test on I+N DT https://certification.canonical.com/hardware/202411-35951/
1. I+N DT with display connect to NV dGPU, the primary GPU is NV dGPU
2. I+N DT with display connect to Intel iGPU, the primary GPU is Intel iGPU
3. I+N DT with display on both NV dGPU and Intel iGPU, the primary GPU is Intel iGPU
Test on I+N hybrid laptop https://certification.canonical.com/hardware/202504-36641/
1. Output to eDP, the primary GPU is Intel iGPU
Test on A+N hybrid laptop https://certification.canonical.com/hardware/202505-36759/
1. Output to eDP, the primary GPU is AMD iGPU
** Tags removed: verification-needed verification-needed-plucky
** Tags added: verification-done verification-done-plucky
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Debcrafters packages, which is subscribed to libpciaccess in Ubuntu.
https://bugs.launchpad.net/bugs/2111684
Title:
[SRU] Xorg AMD platform A + N config selected wrong primary GPU
Status in OEM Priority Project:
New
Status in libpciaccess package in Ubuntu:
Fix Committed
Status in libpciaccess source package in Noble:
Fix Committed
Status in libpciaccess source package in Oracular:
Won't Fix
Status in libpciaccess source package in Plucky:
Fix Committed
Status in libpciaccess source package in Questing:
Fix Committed
Bug description:
[ Impact ]
* On AMD platform with Nvidia dGPU, if the iGPU is not VGA compatible. and pci order is later than NV
* The system will select Nvidia as the primary GPU, which is wrong on AMD platform.
[ Test Plan ]
* On AMD (StrixPoint or KrakanPoint) platform with Nvidia dGPU
* Check the renderer by $ xrandr -display <display name>
--listproviders
* Provider 0 should be AMD graphic
[ Where problems could occur ]
* If Nvidia dGPU is VGA compatible and the boot_vga is set, the
system still select Nvidia as the primary GPU.
* If the platform AMD graphic card acpi companion is not configured
in the BIOS, the system still select Nvidia as the primary GPU.
[ Other Info ]
* Upstream MP:
https://gitlab.freedesktop.org/xorg/lib/libpciaccess/-/merge_requests/37
To manage notifications about this bug go to:
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References