This bug was fixed in the package linux-oem-6.11 - 6.11.0-1008.8
---------------
linux-oem-6.11 (6.11.0-1008.8) noble; urgency=medium
* noble/linux-oem-6.11: 6.11.0-1008.8 -proposed tracker (LP: #2088051)
* Packaging resync (LP: #1786013)
- [Packaging] debian.oem/dkms-versions -- manual update for Intel MIPI
Camera
* Stalls unless C-states disabled - Intel Lunarlake (LP: #2087815)
- SAUCE: x86/cpu: Add INTEL_FAM6_LUNARLAKE_M to X86_BUG_MONITOR
* [SRU] Fix error of resume on rtl8168fp (LP: #2087507)
- r8169: avoid unsolicited interrupts
* Unreadable thunderbolt nvm_version under sysfs (LP: #2085945)
- thunderbolt: Add only on-board retimers when
!CONFIG_USB4_DEBUGFS_MARGINING
* NVIDIA WANR_ON call trace right after power on or resumed on 6.11 kernel
(LP: #2086668)
- mm: introduce ARCH_SUPPORTS_HUGE_PFNMAP and special bits to pmd/pud
- mm: new follow_pfnmap API
- mm/x86/pat: use the new follow_pfnmap API
- mm/x86: support large pfn mappings
- mm: fix follow_pfnmap API lockdep assert
- [Config] enable ARCH_SUPPORTS_{HUGE,PMD,PUD}_PFNMAP
* Ubuntu 24.04 OS can't install on the nvme(on PCH) with raid on mode
(LP: #2085853)
- SAUCE: PCI: vmd: Clean up vmd_enable_domain function
- SAUCE: PCI: vmd: Add VMD PCH rootbus support
- SAUCE: PCI: vmd: Add WA for VMD PCH rootbus support
* Fix phantom monitor on some machines with kernel 6.11 (LP: #2085456)
- firmware/sysfb: Disable sysfb for firmware buffers with unknown parent
* Internal microphone recording voice with noise on Dell D14 AIO systems
(LP: #2085777)
- ALSA: hda/realtek: Limit internal Mic boost on Dell platform
-- Kuan-Ying Lee <[email protected]> Wed, 13 Nov 2024
17:27:37 +0800
** Changed in: linux-oem-6.11 (Ubuntu Noble)
Status: Fix Committed => Fix Released
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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:
Invalid
Status in linux source package in Noble:
New
Status in linux-oem-6.11 source package in Noble:
Fix Released
Status in linux source package in Oracular:
New
Status in linux-oem-6.11 source package in Oracular:
Invalid
Status in linux source package in Plucky:
New
Status in linux-oem-6.11 source package in Plucky:
Invalid
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]
The bug is caused by the commit
https://github.com/torvalds/linux/commit/b49420d6a1aeb399e5b107fc6eb8584d0860fbd7
in 6.11. Needs to introduce the 6.12 fix
https://github.com/torvalds/linux/commit/ad604f0a4c040dcb8faf44dc72db25e457c28076.
[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.
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