** Changed in: linux-oem-6.14 (Ubuntu Noble)
Status: New => Fix Committed
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https://bugs.launchpad.net/bugs/2124232
Title:
Adjust fbcon console device detection for Dual GPU platform
Status in HWE Next:
New
Status in linux package in Ubuntu:
New
Status in linux-oem-6.14 package in Ubuntu:
New
Status in linux source package in Noble:
New
Status in linux-oem-6.14 source package in Noble:
Fix Committed
Status in linux source package in Plucky:
New
Status in linux-oem-6.14 source package in Plucky:
New
Bug description:
[SRU Justification]
[Impact]
Some AMD platforms with additional NVIDIA GPU consume too much power than
expected. For this kind of platforms with 2 GPUs that are not VGA devices,
decided not to overload the VGA arbiter for non VGA devices.
[Fix]
Backport upstream patchset of
https://lore.kernel.org/linux-pci/[email protected]/T/#m53c998f4946ae7eb99d2cbc329a968a0ed0daba0
.
[Test Case]
1. Boot up the machines with 2 GPUs, like AMD platform GR-D(A+N)
2. Open Nvidia setting GUI, there is no “PRIME Profiles” option, and default
use nvidia to render when check with command “#glxinfo -B“, even “prime-select
query“ output in “on-demand“.
3. Monitor runtime status of NVIDIA by `cat
/sys/bus/pci/devices/0000:xx:00.0/power/runtime_status` and make sure it's not
always active.
[Where problems could occur]
Only work with user space utility for adjusting the boot_display attribute in
sysfs. No regression expected at the current stage.
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