Public bug reported: [SRU Justification]
[Impact] There will be a confusing phantom monitor shown on the display list, but actually no extra monitor are connected. [Fix] Revert the upstream commit https://github.com/torvalds/linux/commit/b49420d6a1aeb399e5b107fc6eb8584d0860fbd7 will fix it. Need to collect more information and report to the author of the commit [Test Case] 1. Make sure no external monitor connected 2. Power on the particular machine 3. Issue the command on Terminal `DISPLAY=:0 xrandr -q`. 4. Check if there's a "Unknown 23" monitor" on the display list [Where problems could occur] Need to check on more machines with different configurations. It only happens on 6.11 and it only affects the SCREEN INFO displayed. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Affects: linux-oem-6.11 (Ubuntu) Importance: Undecided Status: New ** Affects: linux (Ubuntu Noble) Importance: Undecided Status: New ** Affects: linux-oem-6.11 (Ubuntu Noble) Importance: Undecided Status: In Progress ** Affects: linux (Ubuntu Oracular) Importance: Undecided Status: New ** Affects: linux-oem-6.11 (Ubuntu Oracular) Importance: Undecided Status: New ** Affects: linux (Ubuntu Plucky) Importance: Undecided Status: New ** Affects: linux-oem-6.11 (Ubuntu Plucky) Importance: Undecided Status: New ** Also affects: linux-oem-6.11 (Ubuntu Oracular) Importance: Undecided Status: New ** Also affects: linux-oem-6.11 (Ubuntu Plucky) Importance: Undecided Status: New ** Also affects: linux-oem-6.11 (Ubuntu Noble) Importance: Undecided Status: New ** Also affects: linux (Ubuntu) Importance: Undecided Status: New ** Changed in: linux-oem-6.11 (Ubuntu Noble) Status: New => In Progress -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-6.11 in Ubuntu. https://bugs.launchpad.net/bugs/2085456 Title: Fix phantom monitor on some machines with kernel 6.11 Status in linux package in Ubuntu: New Status in linux-oem-6.11 package in Ubuntu: New Status in linux source package in Noble: New Status in linux-oem-6.11 source package in Noble: In Progress Status in linux source package in Oracular: New Status in linux-oem-6.11 source package in Oracular: New Status in linux source package in Plucky: New Status in linux-oem-6.11 source package in Plucky: New Bug description: [SRU Justification] [Impact] There will be a confusing phantom monitor shown on the display list, but actually no extra monitor are connected. [Fix] Revert the upstream commit https://github.com/torvalds/linux/commit/b49420d6a1aeb399e5b107fc6eb8584d0860fbd7 will fix it. Need to collect more information and report to the author of the commit [Test Case] 1. Make sure no external monitor connected 2. Power on the particular machine 3. Issue the command on Terminal `DISPLAY=:0 xrandr -q`. 4. Check if there's a "Unknown 23" monitor" on the display list [Where problems could occur] Need to check on more machines with different configurations. It only happens on 6.11 and it only affects the SCREEN INFO displayed. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2085456/+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
