Public bug reported: [Impact] Integrated GPU on AMD based HP desktop doesn't work.
[Fix] Coalesce host bridge contiguous apertures so the resources requested by child devices can be met. [Test] Boot affected systems. No picture from the iGPU. With the patch applied, iGPU can work normally. [Where problems could occur] Assume there are device A and device B and they request overlapped resource region, the original logic may not be able to allocate enough resource for A so device B claimed the resource in the end. Once the fix is applied, the region may be big enough for device A, hence device B won't be able to get the resource it needs. Hopefully we don't have such broken systems. ** Affects: hwe-next Importance: Undecided Status: New ** Affects: linux (Ubuntu) Importance: Critical Status: Confirmed ** Affects: linux-oem-5.10 (Ubuntu) Importance: Undecided Status: Invalid ** Affects: linux (Ubuntu Focal) Importance: Undecided Status: Won't Fix ** Affects: linux-oem-5.10 (Ubuntu Focal) Importance: Critical Status: Confirmed ** Affects: linux (Ubuntu Hirsute) Importance: Critical Status: Confirmed ** Affects: linux-oem-5.10 (Ubuntu Hirsute) Importance: Undecided Status: Invalid ** Tags: oem-priority originate-from-1914373 stella ** Also affects: linux (Ubuntu Focal) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Hirsute) Importance: Undecided Status: New ** Also affects: linux-oem-5.10 (Ubuntu) Importance: Undecided Status: New ** Changed in: linux-oem-5.10 (Ubuntu) Status: New => Invalid ** Changed in: linux-oem-5.10 (Ubuntu Focal) Status: New => Confirmed ** Changed in: linux-oem-5.10 (Ubuntu Hirsute) Status: New => Invalid ** Changed in: linux (Ubuntu Focal) Status: New => Won't Fix ** Changed in: linux (Ubuntu) Status: New => Confirmed ** Changed in: linux (Ubuntu Hirsute) Status: New => Confirmed ** Changed in: linux (Ubuntu) Importance: Undecided => Critical ** Changed in: linux (Ubuntu Hirsute) Importance: Undecided => Critical ** Changed in: linux-oem-5.10 (Ubuntu Focal) Importance: Undecided => Critical ** Tags added: oem-priority originate-from-1914373 stella -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1931147 Title: Fix non-working GPU on Some HP desktops To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1931147/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs