This still occurs with 19.04 (Disco Dingo) and kernel 5.0.0-13-generic, and does not seem to be Firefox specific. I've also had this crash when using some KDE apps. This issue seems to occurs at 2-3 times a day on frequent use, each time requiring a forced reboot to fix (because Ubuntu never reboots gracefully when Xorg is hanging in kernelspace).
[170138.010150] INFO: task Xorg:879 blocked for more than 120 seconds. [170138.011257] Not tainted 5.0.0-13-generic #14-Ubuntu [170138.012182] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [170138.013506] Xorg D 0 879 790 0x00400004 [170138.013508] Call Trace: [170138.013513] __schedule+0x2d0/0x840 [170138.013514] schedule+0x2c/0x70 [170138.013516] schedule_preempt_disabled+0xe/0x10 [170138.013517] __ww_mutex_lock.isra.11+0x3e0/0x750 [170138.013519] __ww_mutex_lock_slowpath+0x16/0x20 [170138.013520] ww_mutex_lock+0x34/0x50 [170138.013525] ttm_eu_reserve_buffers+0x1f9/0x2e0 [ttm] [170138.013528] qxl_release_reserve_list+0x67/0x150 [qxl] [170138.013530] ? qxl_bo_pin+0x11d/0x200 [qxl] [170138.013532] qxl_cursor_atomic_update+0x1b0/0x2e0 [qxl] [170138.013540] drm_atomic_helper_commit_planes+0xb9/0x220 [drm_kms_helper] [170138.013544] drm_atomic_helper_commit_tail+0x2b/0x70 [drm_kms_helper] [170138.013547] commit_tail+0x67/0x70 [drm_kms_helper] [170138.013555] drm_atomic_helper_commit+0x113/0x120 [drm_kms_helper] [170138.013570] drm_atomic_commit+0x4a/0x50 [drm] [170138.013574] drm_atomic_helper_update_plane+0xe9/0x100 [drm_kms_helper] [170138.013581] __setplane_atomic+0xd6/0x120 [drm] [170138.013588] drm_mode_cursor_universal+0x145/0x270 [drm] [170138.013596] drm_mode_cursor_common+0x18f/0x200 [drm] [170138.013603] ? drm_mode_cursor_ioctl+0x60/0x60 [drm] [170138.013609] drm_mode_cursor2_ioctl+0xe/0x10 [drm] [170138.013615] drm_ioctl_kernel+0xad/0xf0 [drm] [170138.013616] ? ___sys_recvmsg+0x16c/0x200 [170138.013622] drm_ioctl+0x233/0x410 [drm] [170138.013629] ? drm_mode_cursor_ioctl+0x60/0x60 [drm] [170138.013631] ? ep_scan_ready_list.constprop.23+0x1f0/0x200 [170138.013633] do_vfs_ioctl+0xa9/0x640 [170138.013634] ? __sys_recvmsg+0x88/0xa0 [170138.013635] ksys_ioctl+0x67/0x90 [170138.013637] __x64_sys_ioctl+0x1a/0x20 [170138.013638] do_syscall_64+0x5a/0x110 [170138.013639] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [170138.013640] RIP: 0033:0x7f3a80734417 [170138.013644] Code: Bad RIP value. [170138.013645] RSP: 002b:00007ffcae8e3488 EFLAGS: 00003246 ORIG_RAX: 0000000000000010 [170138.013646] RAX: ffffffffffffffda RBX: 000055aaa657c610 RCX: 00007f3a80734417 [170138.013647] RDX: 00007ffcae8e34c0 RSI: 00000000c02464bb RDI: 000000000000000e [170138.013647] RBP: 00007ffcae8e34c0 R08: 0000000000000040 R09: 0000000000000010 [170138.013647] R10: 000000000000003f R11: 0000000000003246 R12: 00000000c02464bb [170138.013648] R13: 000000000000000e R14: 0000000000000000 R15: 000055aaa657a450 ** Summary changed: - Xorg indefinitely hangs in kernelspace during scrolling a web page in Firefox + Xorg indefinitely hangs in kernelspace at least 2-3 times a day -- 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/1813620 Title: Xorg indefinitely hangs in kernelspace at least 2-3 times a day Status in linux package in Ubuntu: Confirmed Bug description: The graphical environment seems to hang when scrolling web pages in Firefox. Can't reliably reproduce during every scrolling, but it has happened at least 5 times in the past 7 days. Happens in Kubuntu VM-s running under KVM and QEMU (3.1.0) on multiple host machines. This issue only started to happen sometime this month. First these VM-s were running 18.04 so I was hoping that updating them to 18.10 would help, but it didn't. I'm guessing that some kernel update for both bionic and cosmic causes this. Since this bug causes the graphical environment to become totally unresponsive, this has already already cost me some lost data, but very fortunately not much. ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: linux-image-4.18.0-13-generic 4.18.0-13.14 ProcVersionSignature: Ubuntu 4.18.0-13.14-generic 4.18.17 Uname: Linux 4.18.0-13-generic x86_64 ApportVersion: 2.20.10-0ubuntu13.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jotik 1962 F.... pulseaudio Date: Mon Jan 28 18:09:57 2019 HibernationDevice: RESUME=UUID=9dfc65ab-a122-4254-8806-a580fea3c953 InstallationDate: Installed on 2015-10-18 (1197 days ago) InstallationMedia: Kubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) IwConfig: lo no wireless extensions. eth0 no wireless extensions. Lsusb: Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: QEMU Standard PC (i440FX + PIIX, 1996) ProcFB: 0 qxldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-13-generic root=UUID=78ee528a-a065-4522-b2ca-a1959850a740 ro console=ttyS0 verbose PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-4.18.0-13-generic N/A linux-backports-modules-4.18.0-13-generic N/A linux-firmware 1.175.1 RfKill: SourcePackage: linux UpgradeStatus: Upgraded to cosmic on 2019-01-20 (7 days ago) dmi.bios.date: 04/01/2014 dmi.bios.vendor: SeaBIOS dmi.bios.version: 1.11.0-20180624_124920-prayer dmi.chassis.type: 1 dmi.chassis.vendor: QEMU dmi.chassis.version: pc-i440fx-2.3 dmi.modalias: dmi:bvnSeaBIOS:bvr1.11.0-20180624_124920-prayer:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-2.3:cvnQEMU:ct1:cvrpc-i440fx-2.3: dmi.product.name: Standard PC (i440FX + PIIX, 1996) dmi.product.version: pc-i440fx-2.3 dmi.sys.vendor: QEMU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1813620/+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
