Public bug reported:
Plugging in and unplugging an Apple Studio Display (5120x2880 via
Thunderbolt/USB-C) causes gnome-shell to segfault and terminate the user
session on Ubuntu 25.10 with Wayland.
Additional System Information:
Graphics: AMD Radeon 860M (integrated, amdgpu driver)
Hardware: Lenovo ThinkPad P14s Gen 6 AMD (Ryzen AI 7 PRO 350)
Note: Running at 3840x2160 due to separate 5K negotiation issues (5K
displays as black screen)
Steps to Reproduce:
- Boot system with Apple Studio Display connected via Thunderbolt/USB-C
- Log into GNOME Wayland session
- Physically unplug the Thunderbolt cable from the laptop
gnome-shell immediately segfaults
Session terminates, returning user to GDM login screen
Relevant frame:
```
#6 0x000077f80a0b4de4 in meta_logical_monitor_get_layout () at
libmutter-17.so.0
#13 0x000077f80a0c6d46 in meta_monitor_manager_rebuild () at libmutter-17.so.0
#15 0x000077f80a0c1393 in meta_monitor_manager_apply_monitors_config () at
libmutter-17.so.0
#16 0x000077f80a0c4994 in meta_monitor_manager_ensure_configured () at
libmutter-17.so.0
```
This appears to be related to bugs #1733127, #1952766, #2004111
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: gnome-shell 49.0-1ubuntu1.2
ProcVersionSignature: Ubuntu 6.17.0-8.8-generic 6.17.2
Uname: Linux 6.17.0-8-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sat Dec 27 10:30:09 2025
DisplayManager: gdm3
InstallationDate: Installed on 2025-11-13 (44 days ago)
InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/usr/bin/zsh
XDG_RUNTIME_DIR=<set>
RelatedPackageVersions: mutter-common 49.0-2ubuntu5.3
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gnome-shell (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug questing wayland-session
** Attachment added: "_usr_bin_gnome-shell.1000.crash"
https://bugs.launchpad.net/bugs/2137172/+attachment/5936151/+files/_usr_bin_gnome-shell.1000.crash
** Description changed:
Unplugging an Apple Studio Display (5120x2880 via Thunderbolt/USB-C)
causes gnome-shell to segfault and terminate the user session on Ubuntu
25.10 with Wayland.
System Information:
- OS: Ubuntu 25.10 (Plucky Puffin)
+ OS: Ubuntu 25.10
Desktop: GNOME Shell 49.0 / Mutter 49.0
Session Type: Wayland
Graphics: AMD Radeon 860M (integrated, amdgpu driver)
Hardware: Lenovo ThinkPad P14s Gen 6 AMD (Ryzen AI 7 PRO 350)
Note: Running at 3840x2160 due to separate 5K negotiation issues
Steps to Reproduce:
- Boot system with Apple Studio Display connected via Thunderbolt/USB-C
- Log into GNOME Wayland session
- Physically unplug the Thunderbolt cable from the laptop
gnome-shell immediately segfaults
Session terminates, returning user to GDM login screen
Relevant frame:
```
#6 0x000077f80a0b4de4 in meta_logical_monitor_get_layout () at
libmutter-17.so.0
#13 0x000077f80a0c6d46 in meta_monitor_manager_rebuild () at libmutter-17.so.0
#15 0x000077f80a0c1393 in meta_monitor_manager_apply_monitors_config () at
libmutter-17.so.0
#16 0x000077f80a0c4994 in meta_monitor_manager_ensure_configured () at
libmutter-17.so.0
```
This appears to be a long-standing Wayland hot-plug issue on AMD
hardware (related to bugs #1733127, #1952766, #2004111)
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: gnome-shell 49.0-1ubuntu1.2
ProcVersionSignature: Ubuntu 6.17.0-8.8-generic 6.17.2
Uname: Linux 6.17.0-8-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sat Dec 27 10:30:09 2025
DisplayManager: gdm3
InstallationDate: Installed on 2025-11-13 (44 days ago)
InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
ProcEnviron:
- LANG=en_US.UTF-8
- PATH=(custom, no user)
- SHELL=/usr/bin/zsh
- XDG_RUNTIME_DIR=<set>
+ LANG=en_US.UTF-8
+ PATH=(custom, no user)
+ SHELL=/usr/bin/zsh
+ XDG_RUNTIME_DIR=<set>
RelatedPackageVersions: mutter-common 49.0-2ubuntu5.3
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
** Summary changed:
- gnome-shell crashes on plug/unplug of Apple Studio Display
+ gnome-shell crashes (SIGSEGV in meta_logical_monitor_get_layout) when
hot-unplugging Thunderbolt display on Wayland
** Description changed:
- Unplugging an Apple Studio Display (5120x2880 via Thunderbolt/USB-C)
- causes gnome-shell to segfault and terminate the user session on Ubuntu
- 25.10 with Wayland.
+ Plugging in and unplugging an Apple Studio Display (5120x2880 via
+ Thunderbolt/USB-C) causes gnome-shell to segfault and terminate the user
+ session on Ubuntu 25.10 with Wayland.
System Information:
OS: Ubuntu 25.10
Desktop: GNOME Shell 49.0 / Mutter 49.0
Session Type: Wayland
Graphics: AMD Radeon 860M (integrated, amdgpu driver)
Hardware: Lenovo ThinkPad P14s Gen 6 AMD (Ryzen AI 7 PRO 350)
Note: Running at 3840x2160 due to separate 5K negotiation issues
Steps to Reproduce:
- Boot system with Apple Studio Display connected via Thunderbolt/USB-C
- Log into GNOME Wayland session
- Physically unplug the Thunderbolt cable from the laptop
gnome-shell immediately segfaults
Session terminates, returning user to GDM login screen
Relevant frame:
```
#6 0x000077f80a0b4de4 in meta_logical_monitor_get_layout () at
libmutter-17.so.0
#13 0x000077f80a0c6d46 in meta_monitor_manager_rebuild () at libmutter-17.so.0
#15 0x000077f80a0c1393 in meta_monitor_manager_apply_monitors_config () at
libmutter-17.so.0
#16 0x000077f80a0c4994 in meta_monitor_manager_ensure_configured () at
libmutter-17.so.0
```
This appears to be a long-standing Wayland hot-plug issue on AMD
hardware (related to bugs #1733127, #1952766, #2004111)
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: gnome-shell 49.0-1ubuntu1.2
ProcVersionSignature: Ubuntu 6.17.0-8.8-generic 6.17.2
Uname: Linux 6.17.0-8-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sat Dec 27 10:30:09 2025
DisplayManager: gdm3
InstallationDate: Installed on 2025-11-13 (44 days ago)
InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/usr/bin/zsh
XDG_RUNTIME_DIR=<set>
RelatedPackageVersions: mutter-common 49.0-2ubuntu5.3
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
** Summary changed:
- gnome-shell crashes (SIGSEGV in meta_logical_monitor_get_layout) when
hot-unplugging Thunderbolt display on Wayland
+ gnome-shell crashes (SIGSEGV in meta_logical_monitor_get_layout) when
hot-plugging/unplugging Thunderbolt display on Wayland
** Description changed:
Plugging in and unplugging an Apple Studio Display (5120x2880 via
Thunderbolt/USB-C) causes gnome-shell to segfault and terminate the user
session on Ubuntu 25.10 with Wayland.
- System Information:
-
- OS: Ubuntu 25.10
- Desktop: GNOME Shell 49.0 / Mutter 49.0
- Session Type: Wayland
+ Additional System Information:
Graphics: AMD Radeon 860M (integrated, amdgpu driver)
Hardware: Lenovo ThinkPad P14s Gen 6 AMD (Ryzen AI 7 PRO 350)
- Note: Running at 3840x2160 due to separate 5K negotiation issues
+ Note: Running at 3840x2160 due to separate 5K negotiation issues (5K
+ displays as black screen)
Steps to Reproduce:
- Boot system with Apple Studio Display connected via Thunderbolt/USB-C
- Log into GNOME Wayland session
- Physically unplug the Thunderbolt cable from the laptop
gnome-shell immediately segfaults
Session terminates, returning user to GDM login screen
Relevant frame:
```
#6 0x000077f80a0b4de4 in meta_logical_monitor_get_layout () at
libmutter-17.so.0
#13 0x000077f80a0c6d46 in meta_monitor_manager_rebuild () at libmutter-17.so.0
#15 0x000077f80a0c1393 in meta_monitor_manager_apply_monitors_config () at
libmutter-17.so.0
#16 0x000077f80a0c4994 in meta_monitor_manager_ensure_configured () at
libmutter-17.so.0
```
This appears to be a long-standing Wayland hot-plug issue on AMD
hardware (related to bugs #1733127, #1952766, #2004111)
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: gnome-shell 49.0-1ubuntu1.2
ProcVersionSignature: Ubuntu 6.17.0-8.8-generic 6.17.2
Uname: Linux 6.17.0-8-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sat Dec 27 10:30:09 2025
DisplayManager: gdm3
InstallationDate: Installed on 2025-11-13 (44 days ago)
InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/usr/bin/zsh
XDG_RUNTIME_DIR=<set>
RelatedPackageVersions: mutter-common 49.0-2ubuntu5.3
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
** Description changed:
Plugging in and unplugging an Apple Studio Display (5120x2880 via
Thunderbolt/USB-C) causes gnome-shell to segfault and terminate the user
session on Ubuntu 25.10 with Wayland.
Additional System Information:
Graphics: AMD Radeon 860M (integrated, amdgpu driver)
Hardware: Lenovo ThinkPad P14s Gen 6 AMD (Ryzen AI 7 PRO 350)
Note: Running at 3840x2160 due to separate 5K negotiation issues (5K
displays as black screen)
Steps to Reproduce:
- Boot system with Apple Studio Display connected via Thunderbolt/USB-C
- Log into GNOME Wayland session
- Physically unplug the Thunderbolt cable from the laptop
gnome-shell immediately segfaults
Session terminates, returning user to GDM login screen
Relevant frame:
```
#6 0x000077f80a0b4de4 in meta_logical_monitor_get_layout () at
libmutter-17.so.0
#13 0x000077f80a0c6d46 in meta_monitor_manager_rebuild () at libmutter-17.so.0
#15 0x000077f80a0c1393 in meta_monitor_manager_apply_monitors_config () at
libmutter-17.so.0
#16 0x000077f80a0c4994 in meta_monitor_manager_ensure_configured () at
libmutter-17.so.0
```
- This appears to be a long-standing Wayland hot-plug issue on AMD
- hardware (related to bugs #1733127, #1952766, #2004111)
+ This appears to be related to bugs #1733127, #1952766, #2004111
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: gnome-shell 49.0-1ubuntu1.2
ProcVersionSignature: Ubuntu 6.17.0-8.8-generic 6.17.2
Uname: Linux 6.17.0-8-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sat Dec 27 10:30:09 2025
DisplayManager: gdm3
InstallationDate: Installed on 2025-11-13 (44 days ago)
InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/usr/bin/zsh
XDG_RUNTIME_DIR=<set>
RelatedPackageVersions: mutter-common 49.0-2ubuntu5.3
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
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https://bugs.launchpad.net/bugs/2137172
Title:
gnome-shell crashes (SIGSEGV in meta_logical_monitor_get_layout) when
hot-plugging/unplugging Thunderbolt display on Wayland
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