** No longer affects: linux-oem-5.14 (Ubuntu Focal) ** No longer affects: linux-oem-5.14 (Ubuntu Jammy)
** No longer affects: linux-oem-5.14 (Ubuntu) ** No longer affects: linux-oem-5.17 (Ubuntu Focal) ** No longer affects: linux (Ubuntu Focal) ** Tags added: oem-priority originate-from-1971222 somerville -- 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/1989647 Title: Fix AMDGPU: No video output and system hangs with two monitor (dGPU: W6400) Status in HWE Next: New Status in linux package in Ubuntu: Invalid Status in linux-oem-5.17 package in Ubuntu: Invalid Status in linux source package in Jammy: In Progress Status in linux-oem-5.17 source package in Jammy: In Progress Bug description: [Impact] There's possibility that system will hang and no video output of two external monitor with dGPU W6400 Monitor 1: ASUS ProArt PA238Q (FHD) Monitor 2: Dell P2415Q (4K) [Fix] Introduce the dmi quirk in amdgpu, and add dmi quirks to bypass the affected machine. [Test Case] Two ways to verify Method 1: 1. Cold boot with ASUS 2. Attach Dell monitor. ASUS is primary. 3. Switch display mode to single ASUS 4. Switch disaply mode back to Joing Displays. ASUS is primary Method 2: 1. Cold boot with two monitors. ASUS is primary 2. Unplug the DP cable of Dell monitor from DUT and wait for few seconds 3. Plug it back to DUT [Where problems could occur] Low, add a dmi quirk to bypass the target machine. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1989647/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
