Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.19 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19-rc7 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1796487 Title: The i915 driver crashes often on a Dell latitude 630 Status in linux package in Ubuntu: Incomplete Bug description: Hi, The i915 driver is crashing very often, for instance typynig 'xrandr -q' produces a crash, and at startup lightdm also seem to crash because of that. Here's a crash log: [ 2040.136248] ------------[ cut here ]------------ [ 2040.136254] vblank wait timed out on crtc 1 [ 2040.136389] WARNING: CPU: 1 PID: 6418 at /build/linux-39dmni/linux-4.15.0/drivers/gpu/drm/drm_vblank.c:1073 drm_wait_one_vblank+0x181/0x190 [drm] [ 2040.136393] Modules linked in: hid_generic usbhid hid gpio_ich dell_rbtn dell_laptop dell_smbios_smm dcdbas dell_smm_hwmon wl(POE) coretemp kvm irqbypass dell_wmi sparse_keymap snd_hda_codec_hdmi snd_hda_codec_idt snd_hda_codec_generic joydev snd_hda_intel snd_hda_codec pcmcia snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event input_leds snd_rawmidi serio_raw dell_smbios_wmi dell_smbios wmi_bmof dell_wmi_descriptor snd_seq snd_seq_device snd_timer snd yenta_socket pcmcia_rsrc lpc_ich pcmcia_core cfg80211 soundcore shpchp mac_hid sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 psmouse firewire_ohci i915 pata_acpi firewire_core crc_itu_t i2c_algo_bit tg3 drm_kms_helper ptp pps_core syscopyarea sysfillrect sysimgblt fb_sys_fops drm wmi video [ 2040.136531] CPU: 1 PID: 6418 Comm: Xorg Tainted: P W OE 4.15.0-36-generic #39-Ubuntu [ 2040.136535] Hardware name: Dell Inc. Latitude D630 /0KU184, BIOS A15 11/24/2008 [ 2040.136573] RIP: 0010:drm_wait_one_vblank+0x181/0x190 [drm] [ 2040.136576] RSP: 0018:ffffbabfc0a27960 EFLAGS: 00010282 [ 2040.136582] RAX: 0000000000000000 RBX: ffff8df7cd118000 RCX: 0000000000000006 [ 2040.136586] RDX: 0000000000000007 RSI: 0000000000000082 RDI: ffff8df7dfd16490 [ 2040.136590] RBP: ffffbabfc0a279b8 R08: 0000000000000001 R09: 000000000000084b [ 2040.136594] R10: ffffbabfc0a27800 R11: 0000000000000000 R12: 0000000000000001 [ 2040.136597] R13: 0000000000000000 R14: 000000002d00091e R15: ffff8df7cd04c968 [ 2040.136603] FS: 00007f96a4876600(0000) GS:ffff8df7dfd00000(0000) knlGS:0000000000000000 [ 2040.136607] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2040.136611] CR2: 0000563c2fc3dce4 CR3: 0000000110b72000 CR4: 00000000000006e0 [ 2040.136614] Call Trace: [ 2040.136632] ? wait_woken+0x80/0x80 [ 2040.136740] intel_get_load_detect_pipe+0x5b7/0x620 [i915] [ 2040.136830] intel_tv_detect+0x147/0x510 [i915] [ 2040.136839] ? __i2c_transfer+0x123/0x400 [ 2040.136846] ? _cond_resched+0x19/0x40 [ 2040.136855] ? __ww_mutex_lock_slowpath+0x16/0x20 [ 2040.136883] drm_helper_probe_detect+0x50/0x90 [drm_kms_helper] [ 2040.136902] ? drm_helper_probe_detect+0x50/0x90 [drm_kms_helper] [ 2040.136921] drm_helper_probe_single_connector_modes+0xe2/0x710 [drm_kms_helper] [ 2040.136928] ? __mark_inode_dirty+0x11d/0x3b0 [ 2040.136972] drm_mode_getconnector+0x15d/0x340 [drm] [ 2040.136980] ? lapic_next_event+0x20/0x30 [ 2040.137020] ? drm_mode_connector_property_set_ioctl+0x60/0x60 [drm] [ 2040.137053] drm_ioctl_kernel+0x5f/0xb0 [drm] [ 2040.137086] drm_ioctl+0x31b/0x3d0 [drm] [ 2040.137124] ? drm_mode_connector_property_set_ioctl+0x60/0x60 [drm] [ 2040.137135] do_vfs_ioctl+0xa8/0x630 [ 2040.137142] ? handle_mm_fault+0xb1/0x1f0 [ 2040.137150] ? __do_page_fault+0x270/0x4d0 [ 2040.137156] SyS_ioctl+0x79/0x90 [ 2040.137163] do_syscall_64+0x73/0x130 [ 2040.137171] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 2040.137176] RIP: 0033:0x7f96a1c725d7 [ 2040.137180] RSP: 002b:00007fffa5922888 EFLAGS: 00003246 ORIG_RAX: 0000000000000010 [ 2040.137186] RAX: ffffffffffffffda RBX: 0000562f090e8280 RCX: 00007f96a1c725d7 [ 2040.137190] RDX: 00007fffa59228c0 RSI: 00000000c05064a7 RDI: 000000000000000e [ 2040.137193] RBP: 00007fffa59228c0 R08: 0000000000000000 R09: 0000000000000000 [ 2040.137197] R10: 0000000000000000 R11: 0000000000003246 R12: 00000000c05064a7 [ 2040.137201] R13: 000000000000000e R14: 000000000000000e R15: 00007fffa59228c0 [ 2040.137205] Code: ff ff e8 c3 18 d4 f7 48 8d 75 a8 4c 89 ff e8 07 7a d8 f7 45 85 ed 0f 85 ff fe ff ff 44 89 e6 48 c7 c7 10 a4 36 c0 e8 ff 15 d4 f7 <0f> 0b e9 e9 fe ff ff 0f 1f 84 00 00 00 00 00 66 66 66 66 90 55 [ 2040.137320] ---[ end trace 8dac4fb0d7cdb594 ]--- [ 2050.272295] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]] *ERROR* [CRTC:41:pipe B] flip_done timed out [ 2060.512282] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]] *ERROR* [PLANE:35:plane B] flip_done timed out ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-36-generic 4.15.0-36.39 ProcVersionSignature: Ubuntu 4.15.0-36.39-generic 4.15.18 Uname: Linux 4.15.0-36-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.20.9-0ubuntu7.4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jean 6784 F.... pulseaudio CurrentDesktop: Unity:Unity7:ubuntu Date: Sat Oct 6 15:34:32 2018 HibernationDevice: RESUME=UUID=30799a78-4216-4c10-a118-5efd87b1e6bf InstallationDate: Installed on 2017-12-29 (281 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) MachineType: Dell Inc. Latitude D630 PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-36-generic root=UUID=e48fa1f4-ee64-40dc-93d2-e60494375d3a ro quiet splash vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-4.15.0-36-generic N/A linux-backports-modules-4.15.0-36-generic N/A linux-firmware 1.173.1 SourcePackage: linux UpgradeStatus: Upgraded to bionic on 2018-08-28 (39 days ago) dmi.bios.date: 11/24/2008 dmi.bios.vendor: Dell Inc. dmi.bios.version: A15 dmi.board.name: 0KU184 dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA15:bd11/24/2008:svnDellInc.:pnLatitudeD630:pvr:rvnDellInc.:rn0KU184:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: Latitude D630 dmi.sys.vendor: Dell Inc. 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