Public bug reported: I got this crash report but I don't know what exactly triggered it. I'm willing to provide more info when needed.
ProblemType: Crash DistroRelease: Ubuntu 20.10 Package: xserver-xorg-core 2:1.20.8-2ubuntu6 ProcVersionSignature: Ubuntu 5.8.0-18.19-generic 5.8.4 Uname: Linux 5.8.0-18-generic x86_64 ApportVersion: 2.20.11-0ubuntu45 Architecture: amd64 AssertionMessage: Xorg: ../../../../../../hw/xfree86/common/xf86Helper.c:1743: xf86ScreenToScrn: Assertion `pScreen->myNum < xf86NumScreens' failed. BootLog: Error: [Errno 13] Keine Berechtigung: '/var/log/boot.log' CasperMD5CheckResult: skip CompositorRunning: None CurrentDesktop: ubuntu:GNOME CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read kernel buffer failed: Operation not permitted Date: Wed Sep 16 23:19:51 2020 DistUpgraded: Fresh install DistroCodename: groovy DistroVariant: ubuntu ExecutablePath: /usr/lib/xorg/Xorg ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation UHD Graphics 620 [8086:5917] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Lenovo UHD Graphics 620 [17aa:506a] InstallationDate: Installed on 2020-09-16 (0 days ago) InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Alpha amd64 (20200910) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 5986:2113 Acer, Inc SunplusIT Integrated Camera Bus 001 Device 002: ID 0461:4e57 Primax Electronics, Ltd HID compliant device Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: LENOVO 20LTS01800 ProcCmdline: /usr/lib/xorg/Xorg vt2 -displayfd 3 -auth /run/user/1000/gdm/Xauthority -nolisten tcp -background none -noreset -keeptty -novtswitch -verbose 3 ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=de_DE.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.8.0-18-generic root=UUID=301ac90f-9a29-425d-9b75-b6b2a43bf00a ro quiet splash vt.handoff=7 Signal: 6 SourcePackage: xorg-server StacktraceTop: __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50 __GI_abort () at abort.c:79 __assert_fail_base (fmt=0x7fa38d729588 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0x55dc8d338b00 "pScreen->myNum < xf86NumScreens", file=0x55dc8d338a90 "../../../../../../hw/xfree86/common/xf86Helper.c", line=1743, function=<optimized out>) at assert.c:92 __GI___assert_fail (assertion=0x55dc8d338b00 "pScreen->myNum < xf86NumScreens", file=0x55dc8d338a90 "../../../../../../hw/xfree86/common/xf86Helper.c", line=1743, function=0x55dc8d338d20 "xf86ScreenToScrn") at assert.c:101 xf86ScreenToScrn () Title: Xorg assert failure: Xorg: ../../../../../../hw/xfree86/common/xf86Helper.c:1743: xf86ScreenToScrn: Assertion `pScreen->myNum < xf86NumScreens' failed. UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo dmi.bios.date: 12/18/2019 dmi.bios.release: 1.37 dmi.bios.vendor: LENOVO dmi.bios.version: R0QET60W (1.37 ) dmi.board.asset.tag: Not Available dmi.board.name: 20LTS01800 dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.ec.firmware.release: 1.37 dmi.modalias: dmi:bvnLENOVO:bvrR0QET60W(1.37):bd12/18/2019:br1.37:efr1.37:svnLENOVO:pn20LTS01800:pvrThinkPadL480:rvnLENOVO:rn20LTS01800:rvrNotDefined:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad L480 dmi.product.name: 20LTS01800 dmi.product.sku: LENOVO_MT_20LT_BU_Think_FM_ThinkPad L480 dmi.product.version: ThinkPad L480 dmi.sys.vendor: LENOVO separator: version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.102-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 20.1.5-1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu6 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200714-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1 ** Affects: xorg-server (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-crash groovy need-amd64-retrace single-occurrence ubuntu wayland-session ** Information type changed from Private to Public -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1895897 Title: Xorg assert failure: Xorg: ../../../../../../hw/xfree86/common/xf86Helper.c:1743: xf86ScreenToScrn: Assertion `pScreen->myNum < xf86NumScreens' failed. Status in xorg-server package in Ubuntu: New Bug description: I got this crash report but I don't know what exactly triggered it. I'm willing to provide more info when needed. ProblemType: Crash DistroRelease: Ubuntu 20.10 Package: xserver-xorg-core 2:1.20.8-2ubuntu6 ProcVersionSignature: Ubuntu 5.8.0-18.19-generic 5.8.4 Uname: Linux 5.8.0-18-generic x86_64 ApportVersion: 2.20.11-0ubuntu45 Architecture: amd64 AssertionMessage: Xorg: ../../../../../../hw/xfree86/common/xf86Helper.c:1743: xf86ScreenToScrn: Assertion `pScreen->myNum < xf86NumScreens' failed. BootLog: Error: [Errno 13] Keine Berechtigung: '/var/log/boot.log' CasperMD5CheckResult: skip CompositorRunning: None CurrentDesktop: ubuntu:GNOME CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read kernel buffer failed: Operation not permitted Date: Wed Sep 16 23:19:51 2020 DistUpgraded: Fresh install DistroCodename: groovy DistroVariant: ubuntu ExecutablePath: /usr/lib/xorg/Xorg ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation UHD Graphics 620 [8086:5917] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Lenovo UHD Graphics 620 [17aa:506a] InstallationDate: Installed on 2020-09-16 (0 days ago) InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Alpha amd64 (20200910) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 5986:2113 Acer, Inc SunplusIT Integrated Camera Bus 001 Device 002: ID 0461:4e57 Primax Electronics, Ltd HID compliant device Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: LENOVO 20LTS01800 ProcCmdline: /usr/lib/xorg/Xorg vt2 -displayfd 3 -auth /run/user/1000/gdm/Xauthority -nolisten tcp -background none -noreset -keeptty -novtswitch -verbose 3 ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=de_DE.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.8.0-18-generic root=UUID=301ac90f-9a29-425d-9b75-b6b2a43bf00a ro quiet splash vt.handoff=7 Signal: 6 SourcePackage: xorg-server StacktraceTop: __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50 __GI_abort () at abort.c:79 __assert_fail_base (fmt=0x7fa38d729588 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0x55dc8d338b00 "pScreen->myNum < xf86NumScreens", file=0x55dc8d338a90 "../../../../../../hw/xfree86/common/xf86Helper.c", line=1743, function=<optimized out>) at assert.c:92 __GI___assert_fail (assertion=0x55dc8d338b00 "pScreen->myNum < xf86NumScreens", file=0x55dc8d338a90 "../../../../../../hw/xfree86/common/xf86Helper.c", line=1743, function=0x55dc8d338d20 "xf86ScreenToScrn") at assert.c:101 xf86ScreenToScrn () Title: Xorg assert failure: Xorg: ../../../../../../hw/xfree86/common/xf86Helper.c:1743: xf86ScreenToScrn: Assertion `pScreen->myNum < xf86NumScreens' failed. UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo dmi.bios.date: 12/18/2019 dmi.bios.release: 1.37 dmi.bios.vendor: LENOVO dmi.bios.version: R0QET60W (1.37 ) dmi.board.asset.tag: Not Available dmi.board.name: 20LTS01800 dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.ec.firmware.release: 1.37 dmi.modalias: dmi:bvnLENOVO:bvrR0QET60W(1.37):bd12/18/2019:br1.37:efr1.37:svnLENOVO:pn20LTS01800:pvrThinkPadL480:rvnLENOVO:rn20LTS01800:rvrNotDefined:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad L480 dmi.product.name: 20LTS01800 dmi.product.sku: LENOVO_MT_20LT_BU_Think_FM_ThinkPad L480 dmi.product.version: ThinkPad L480 dmi.sys.vendor: LENOVO separator: version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.102-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 20.1.5-1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu6 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200714-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1895897/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp