I have had 3 hangs between 24 March and 1 April. All were when I was out and about, so I couldn't SSH into the machine.
Today, I had a couple of hangs occur with no apparent cause. Disk activity continued. But, I couldn't SSH into the machine. I killed the machine (during a hang) at 8:35:51 am. I restarted it at 9:14:04 am. It crashed again. I checked /var/crash, and it had the following (I've inserted the file contents below listed files): [ gary@Quasar | Tue 02 Apr 2019 10:11am ] ~ >dir /var/crash total 16 drwxrwsrwt 2 root whoopsie 4096 Apr 2 09:47 ./ drwxr-xr-x 14 root root 4096 Feb 9 19:20 ../ ---------- 1 root whoopsie 0 Apr 2 08:36 _lib_systemd_systemd-logind.0.crash -rw-r--r-- 1 kernoops whoopsie 2324 Apr 2 09:45 linux-image-4.18.0-16-generic.157976.crash ProblemType: KernelOops Annotation: Your system might become unstable now and might need to be restarted. Date: Tue Apr 2 09:45:56 2019 Failure: oops OopsText: watchdog: BUG: soft lockup - CPU#4 stuck for 22s! [pool:2748] Modules linked in: rfcomm ccm bnep arc4 iwldvm snd_hda_codec_hdmi mac80211 intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp btusb btrtl btbcm btintel kvm bluetooth snd_hda_codec_conexant snd_hda_codec_generic snd_hda_intel snd_hda_codec gpio_ich thinkpad_acpi snd_hda_core snd_hwdep snd_pcm iwlwifi nvram snd_seq_midi snd_seq_midi_event ecdh_generic cfg80211 snd_rawmidi snd_seq snd_seq_device snd_timer snd soundcore mei_me mei lpc_ich irqbypass intel_cstate intel_rapl_perf input_leds mac_hid serio_raw wmi_bmof sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 algif_skcipher af_alg dm_crypt crct10dif_pclmul nouveau crc32_pclmul ghash_clmulni_intel mxm_wmi pcbc i2c_algo_bit ttm drm_kms_helper aesni_intel aes_x86_64 syscopyarea crypto_simd sysfillrect cryptd sysimgblt fb_sys_fops glue_helper firewire_ohci sdhci_pci cqhci psmouse drm sdhci ahci e1000e firewire_core libahci crc_itu_t wmi video CPU: 4 PID: 2748 Comm: pool Tainted: G L 4.18.0-16-generic #17~18.04.1-Ubuntu Hardware name: LENOVO 4260A45/4260A45, BIOS 8BET66WW (1.46 ) 06/14/2018 RIP: 0010:smp_call_function_many+0x22c/0x250 Code: 75 8a 00 3b 05 c9 8c 55 01 0f 83 5c fe ff ff 48 63 c8 48 8b 13 48 03 14 cd 00 37 9c b8 8b 4a 18 83 e1 01 74 0a f3 90 8b 4a 18 <83> e1 01 75 f6 eb c7 48 c7 c2 60 60 e8 b8 4c 89 e6 89 c7 e8 cc 75 RSP: 0018:ffffb9f488e47c88 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000007 RBX: ffff9dd0bdd23b80 RCX: 0000000000000003 RDX: ffff9dd0bdde8de0 RSI: 0000000000000000 RDI: ffff9dd0ad028ef8 RBP: ffffb9f488e47cc0 R08: 0000000000027040 R09: ffffffffb81d5449 R10: ffffdab51060f780 R11: 0000000000000148 R12: 0000000000000008 R13: 0000000000023b40 R14: ffffffffb787d920 R15: ffffb9f488e47d00 FS: 00007f9025bff700(0000) GS:ffff9dd0bdd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9025be6ff8 CR3: 00000004268de002 CR4: 00000000000606e0 Call Trace: Package: linux-image-4.18.0-16-generic 4.18.0-16.17~18.04.1 SourcePackage: linux Tags: kernel-oops Uname: Linux 4.18.0-16-generic x86_64 -rw-r--r-- 1 kernoops whoopsie 2317 Apr 2 09:43 linux-image-4.18.0-16-generic.158329.crash ProblemType: KernelOops Annotation: Your system might become unstable now and might need to be restarted. Date: Tue Apr 2 09:43:57 2019 Failure: oops OopsText: watchdog: BUG: soft lockup - CPU#6 stuck for 22s! [thermald:1144] Modules linked in: rfcomm ccm bnep arc4 iwldvm snd_hda_codec_hdmi mac80211 intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp btusb btrtl btbcm btintel kvm bluetooth snd_hda_codec_conexant snd_hda_codec_generic snd_hda_intel snd_hda_codec gpio_ich thinkpad_acpi snd_hda_core snd_hwdep snd_pcm iwlwifi nvram snd_seq_midi snd_seq_midi_event ecdh_generic cfg80211 snd_rawmidi snd_seq snd_seq_device snd_timer snd soundcore mei_me mei lpc_ich irqbypass intel_cstate intel_rapl_perf input_leds mac_hid serio_raw wmi_bmof sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 algif_skcipher af_alg dm_crypt crct10dif_pclmul nouveau crc32_pclmul ghash_clmulni_intel mxm_wmi pcbc i2c_algo_bit ttm drm_kms_helper aesni_intel aes_x86_64 syscopyarea crypto_simd sysfillrect cryptd sysimgblt fb_sys_fops glue_helper firewire_ohci sdhci_pci cqhci psmouse drm sdhci ahci e1000e firewire_core libahci crc_itu_t wmi video CPU: 6 PID: 1144 Comm: thermald Not tainted 4.18.0-16-generic #17~18.04.1-Ubuntu Hardware name: LENOVO 4260A45/4260A45, BIOS 8BET66WW (1.46 ) 06/14/2018 RIP: 0010:smp_call_function_single+0xdc/0x100 Code: 00 00 00 75 40 48 83 c4 48 41 5a 5d 49 8d 62 f8 c3 48 89 d1 48 89 f2 48 8d 75 b0 e8 6e fe ff ff 8b 55 c8 83 e2 01 74 0a f3 90 <8b> 55 c8 83 e2 01 75 f6 eb c2 8b 05 04 af 85 01 85 c0 75 81 0f 0b RSP: 0018:ffffb9f48314fc40 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: ffffb9f48314fcfc RCX: 0000000000000000 RDX: 0000000000000001 RSI: 00000000000000fb RDI: 0000000000000282 RBP: ffffb9f48314fc90 R08: ffff9dd0a7985828 R09: ffff9dd09b849d80 R10: ffffb9f48314fcb0 R11: 0000000000002000 R12: ffffb9f48314fcf8 R13: ffff9dd0a7985bb0 R14: ffffb9f48314fd74 R15: ffff9dd0484a4d80 FS: 00007fb3bfe85700(0000) GS:ffff9dd0bdd80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00003b41368e3000 CR3: 0000000416f2c004 CR4: 00000000000606e0 Call Trace: Package: linux-image-4.18.0-16-generic 4.18.0-16.17~18.04.1 SourcePackage: linux Tags: kernel-oops Uname: Linux 4.18.0-16-generic x86_64 -rw-r--r-- 1 kernoops whoopsie 0 Apr 2 09:47 linux-image-4.18.0-16-generic.158709.crash -rw-r--r-- 1 kernoops whoopsie 0 Apr 2 08:36 linux-image-4.18.0-16-generic.176983.crash -rw-r--r-- 1 kernoops whoopsie 0 Apr 2 08:36 linux-image-4.18.0-16-generic.177025.crash -rw-r--r-- 1 kernoops whoopsie 0 Apr 2 08:36 linux-image-4.18.0-16-generic.184308.crash -rw-r--r-- 1 kernoops whoopsie 0 Apr 2 08:36 linux-image-4.18.0-16-generic.184489.crash -rw-r--r-- 1 kernoops whoopsie 0 Apr 2 08:36 linux-image-4.18.0-16-generic.184514.crash -rwxrwxrwx 1 root whoopsie 0 Apr 2 08:36 .lock* [ gary@Quasar | Tue 02 Apr 2019 10:11am ] ~ Both instances are from cores (#4 & #6) getting into a soft lockup. -- 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/1757445 Title: Suspend does not always resume Status in linux package in Ubuntu: Confirmed Status in linux-meta-hwe package in Ubuntu: Confirmed Status in linux source package in Bionic: Confirmed Bug description: Dell XPS 13 9350 on AC power left running overnight, suspends after a given timeout. When coming back the next morning sometimes the laptop resumes to an aubergine desktop (just the screen, no GDM) and cursor and sits there forever. Sometimes it resumes to a black screen and cursor. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-12-generic 4.15.0-12.13 ProcVersionSignature: Ubuntu 4.15.0-12.13-generic 4.15.7 Uname: Linux 4.15.0-12-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.8-0ubuntu10 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Wed Mar 21 14:15:04 2018 InstallationDate: Installed on 2018-02-13 (36 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180201) MachineType: Dell Inc. XPS 13 9350 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-12-generic root=UUID=bc5b647b-38ca-4206-9e96-774a5ac6b833 ro quiet splash vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-4.15.0-12-generic N/A linux-backports-modules-4.15.0-12-generic N/A linux-firmware 1.173 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/18/2017 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.5.1 dmi.board.name: 07TYC2 dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.5.1:bd08/18/2017:svnDellInc.:pnXPS139350:pvr:rvnDellInc.:rn07TYC2:rvrA01:cvnDellInc.:ct9:cvr: dmi.product.family: NULL dmi.product.name: XPS 13 9350 dmi.sys.vendor: Dell Inc. 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