Public bug reported: [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. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Affects: linux-oem-6.14 (Ubuntu) Importance: Undecided Status: New ** Affects: linux (Ubuntu Noble) Importance: Undecided Status: New ** Affects: linux-oem-6.14 (Ubuntu Noble) Importance: Undecided Status: New ** Affects: linux (Ubuntu Plucky) Importance: Undecided Status: New ** Affects: linux-oem-6.14 (Ubuntu Plucky) Importance: Undecided Status: New ** Also affects: linux-oem-6.14 (Ubuntu) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Plucky) Importance: Undecided Status: New ** Also affects: linux-oem-6.14 (Ubuntu Plucky) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Noble) Importance: Undecided Status: New ** Also affects: linux-oem-6.14 (Ubuntu Noble) Importance: Undecided Status: New -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2124232 Title: Adjust fbcon console device detection for Dual GPU platform 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: New 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2124232/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
