[Bug 2161298] [NEW] Quirk in amdgpu driver for the Apple studio displays

Public bug reported: [ Impact ] During testing, we found problems with both the 2022 and 2026 Apple Studio displays on AMD platforms. We have a quirk that we are upstreaming that (ideally) should be brought into the OEM kernel. [ Fix ] Backport the following quirk: - drm/amd/display: hide Apple Studio Display secondary tile[1] [ Test ] 1. Boot into the kernel with the quirk. 2. Connect the Apple Studio monitor. It should function normally. [ Where the problems could occur ] This quirk matches those displays specifically, so it shouldn't take effects on other displays. That said, this quirk's dependencies make it very unlikely to bring it to 7.0-based kernel. See below. [ Additional information ] Backporting this cleanly depends on a massive file rearrangement patchset[2], which depends on various other patchsets (e.g. the HDMI FRL patchset[3]), making the backport unlikely to happen on 7.0-based kernels. That said, still open a public bug in case other users bump into this, and we can point them to this. The file arrangement patches will likely land in 7.3, and that'll be a more suitable timing to revisit this. [1] https://lore.kernel.org/amd-gfx/20260715134432.1975118-65-Wayne.Lin@amd.com/ [2] https://lore.kernel.org/amd-gfx/20260610094639.1965367-12-chen-yu.chen@amd.com/ [3] https://lore.kernel.org/amd-gfx/20260520202929.555119-1-harry.wentland@amd.com/ ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Description changed: [ Impact ] During testing, we found problems with both the 2022 and 2026 Apple Studio displays on AMD platforms. We have a quirk that we are upstreaming that (ideally) should be brought into the OEM kernel. - [ Fix ] Backport the following quirk: - drm/amd/display: hide Apple Studio Display secondary tile[1] - [ Test ] 1. Boot into the kernel with the quirk. 2. Connect the Apple Studio monitor. It should function normally. - [ Where the problems could occur ] This quirk matches those displays specifically, so it shouldn't take effects on other displays. That said, this quirk's dependencies make it very unlikely to bring it to 7.0-based kernel. See below. - [ Additional information ] Backporting this cleanly depends on a massive file rearrangement patchset[2], which depends on various other patchsets (e.g. the HDMI FRL - patchset[3]), making the backport unlikely to happens on 7.0-based + patchset[3]), making the backport unlikely to happen on 7.0-based kernels. That said, still open a public bug in case other users bump into this, and we can point them to this. The file arrangement patches will likely land in 7.3, and that'll be a more suitable timing to revisit this. [1] https://lore.kernel.org/amd-gfx/20260715134432.1975118-65-Wayne.Lin@amd.com/ [2] https://lore.kernel.org/amd-gfx/20260610094639.1965367-12-chen-yu.chen@amd.com/ [3] https://lore.kernel.org/amd-gfx/20260520202929.555119-1-harry.wentland@amd.com/ -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2161298 Title: Quirk in amdgpu driver for the Apple studio displays Status in linux package in Ubuntu: New Bug description: [ Impact ] During testing, we found problems with both the 2022 and 2026 Apple Studio displays on AMD platforms. We have a quirk that we are upstreaming that (ideally) should be brought into the OEM kernel. [ Fix ] Backport the following quirk: - drm/amd/display: hide Apple Studio Display secondary tile[1] [ Test ] 1. Boot into the kernel with the quirk. 2. Connect the Apple Studio monitor. It should function normally. [ Where the problems could occur ] This quirk matches those displays specifically, so it shouldn't take effects on other displays. That said, this quirk's dependencies make it very unlikely to bring it to 7.0-based kernel. See below. [ Additional information ] Backporting this cleanly depends on a massive file rearrangement patchset[2], which depends on various other patchsets (e.g. the HDMI FRL patchset[3]), making the backport unlikely to happen on 7.0-based kernels. That said, still open a public bug in case other users bump into this, and we can point them to this. The file arrangement patches will likely land in 7.3, and that'll be a more suitable timing to revisit this. [1] https://lore.kernel.org/amd-gfx/20260715134432.1975118-65-Wayne.Lin@amd.com/ [2] https://lore.kernel.org/amd-gfx/20260610094639.1965367-12-chen-yu.chen@amd.com/ [3] https://lore.kernel.org/amd-gfx/20260520202929.555119-1-harry.wentland@amd.com/ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2161298/+subscriptions