Extracted from the failure log, it is the i915 (Intel graphics) driver crashing:
febr 04 15:52:16 hn kernel: [drm] RC6 disabled, disabling runtime PM support febr 04 15:52:16 hn kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 febr 04 15:52:16 hn kernel: PGD 0 P4D 0 febr 04 15:52:16 hn kernel: Oops: 0000 [#1] SMP PTI febr 04 15:52:16 hn kernel: CPU: 3 PID: 557 Comm: systemd-udevd Not tainted 4.18.0-14-generic #15-Ubuntu febr 04 15:52:16 hn kernel: Hardware name: SAMSUNG ELECTRONICS CO., LTD. NP-580-JA03DE/P580 , BIOS 06JM.M014.20100903.KSY 09/03/2010 febr 04 15:52:16 hn kernel: RIP: 0010:gen4_render_ring_flush+0x60/0x110 [i915] febr 04 15:52:16 hn kernel: Code: 00 48 89 df e8 51 fe ff ff 48 3d 00 f0 ff ff 77 6c 44 89 20 48 8d 48 44 c7 40 04 02 40 00 7a 48 8b 53 78 48 8b 92 10 02 00 00 <48> 8b 52 08 48 c7 40 0c 00 00 00 00 83 ca 04 89 50 08 48 8d 50 14 febr 04 15:52:16 hn kernel: RSP: 0018:ffff9b2c80fc7978 EFLAGS: 00010287 febr 04 15:52:16 hn kernel: RAX: ffff9b2c90305000 RBX: ffff8bb5912b6880 RCX: ffff9b2c90305044 febr 04 15:52:16 hn kernel: RDX: 0000000000000000 RSI: 00000000000001a8 RDI: 0000000000000150 febr 04 15:52:16 hn kernel: RBP: ffff9b2c80fc7988 R08: 0000000000000001 R09: 0000000000000004 febr 04 15:52:16 hn kernel: R10: 0000000000000002 R11: ffff8bb5912b6880 R12: 0000000002000022 febr 04 15:52:16 hn kernel: R13: ffff8bb5912b6880 R14: ffff8bb58e230600 R15: ffff8bb58e6c8000 febr 04 15:52:16 hn kernel: FS: 00007fb6a9ccd8c0(0000) GS:ffff8bb597d80000(0000) knlGS:0000000000000000 febr 04 15:52:16 hn kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 febr 04 15:52:16 hn kernel: CR2: 0000000000000008 CR3: 000000010ddec000 CR4: 00000000000006e0 febr 04 15:52:16 hn kernel: Call Trace: febr 04 15:52:16 hn kernel: i915_request_alloc+0x24e/0x370 [i915] febr 04 15:52:16 hn kernel: i915_gem_init+0x26b/0x470 [i915] febr 04 15:52:16 hn kernel: i915_driver_load+0xab8/0xd80 [i915] febr 04 15:52:16 hn kernel: ? mutex_lock+0x12/0x30 febr 04 15:52:16 hn kernel: i915_pci_probe+0x46/0x60 [i915] febr 04 15:52:16 hn kernel: local_pci_probe+0x46/0x90 febr 04 15:52:16 hn kernel: pci_device_probe+0x11c/0x1a0 febr 04 15:52:16 hn kernel: driver_probe_device+0x2e3/0x460 febr 04 15:52:16 hn kernel: __driver_attach+0xe4/0x110 febr 04 15:52:16 hn kernel: ? driver_probe_device+0x460/0x460 febr 04 15:52:16 hn kernel: bus_for_each_dev+0x74/0xb0 febr 04 15:52:16 hn kernel: ? kmem_cache_alloc_trace+0x165/0x1d0 febr 04 15:52:16 hn kernel: driver_attach+0x1e/0x20 febr 04 15:52:16 hn kernel: bus_add_driver+0x159/0x230 febr 04 15:52:16 hn kernel: ? 0xffffffffc0a96000 febr 04 15:52:16 hn kernel: driver_register+0x70/0xc0 febr 04 15:52:16 hn kernel: ? 0xffffffffc0a96000 febr 04 15:52:16 hn kernel: __pci_register_driver+0x57/0x60 febr 04 15:52:16 hn kernel: i915_init+0x55/0x58 [i915] febr 04 15:52:16 hn kernel: do_one_initcall+0x4a/0x1c4 febr 04 15:52:16 hn kernel: ? _cond_resched+0x19/0x30 febr 04 15:52:16 hn kernel: ? kmem_cache_alloc_trace+0x165/0x1d0 febr 04 15:52:16 hn kernel: ? do_init_module+0x27/0x220 febr 04 15:52:16 hn kernel: do_init_module+0x60/0x220 febr 04 15:52:16 hn kernel: load_module+0x14f4/0x1890 febr 04 15:52:16 hn kernel: __do_sys_finit_module+0xbd/0x120 febr 04 15:52:16 hn kernel: ? __do_sys_finit_module+0xbd/0x120 febr 04 15:52:16 hn kernel: __x64_sys_finit_module+0x1a/0x20 febr 04 15:52:16 hn kernel: do_syscall_64+0x5a/0x110 febr 04 15:52:16 hn kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9 febr 04 15:52:16 hn kernel: RIP: 0033:0x7fb6aa752219 febr 04 15:52:16 hn kernel: Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 47 fc 0c 00 f7 d8 64 89 01 48 febr 04 15:52:16 hn kernel: RSP: 002b:00007ffc320726e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 febr 04 15:52:16 hn kernel: RAX: ffffffffffffffda RBX: 000055a07a46dfd0 RCX: 00007fb6aa752219 febr 04 15:52:16 hn kernel: RDX: 0000000000000000 RSI: 00007fb6aa636cad RDI: 0000000000000015 febr 04 15:52:16 hn kernel: RBP: 00007fb6aa636cad R08: 0000000000000000 R09: 0000000000000000 febr 04 15:52:16 hn kernel: R10: 0000000000000015 R11: 0000000000000246 R12: 0000000000000000 febr 04 15:52:16 hn kernel: R13: 000055a07a4836e0 R14: 0000000000020000 R15: 000055a07a46dfd0 febr 04 15:52:16 hn kernel: Modules linked in: kvm i915(+) cfg80211 snd_rawmidi drm_kms_helper irqbypass snd_seq snd_seq_device snd_timer drm samsung_laptop snd intel_cstate intel_ips input_leds i2c_algo_bit fb_sys_fops syscopyarea sysfillrect sysimgblt soundcore joydev serio_raw dell_smo8800 video mac_hid sch_fq_codel ipt_REJECT nf_reject_ipv4 nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_tcpudp parport_pc ppdev xt_addrtype lp parport nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack iptable_filter bpfilter ip_tables x_tables autofs4 btrfs xor zstd_compress raid6_pq libcrc32c hid_generic usbhid gpio_ich hid psmouse sky2 ahci i2c_i801 libahci lpc_ich febr 04 15:52:16 hn kernel: CR2: 0000000000000008 febr 04 15:52:16 hn kernel: ---[ end trace 0c9de5a60ebf01c5 ]--- febr 04 15:52:16 hn kernel: RIP: 0010:gen4_render_ring_flush+0x60/0x110 [i915] febr 04 15:52:16 hn kernel: Code: 00 48 89 df e8 51 fe ff ff 48 3d 00 f0 ff ff 77 6c 44 89 20 48 8d 48 44 c7 40 04 02 40 00 7a 48 8b 53 78 48 8b 92 10 02 00 00 <48> 8b 52 08 48 c7 40 0c 00 00 00 00 83 ca 04 89 50 08 48 8d 50 14 febr 04 15:52:16 hn kernel: RSP: 0018:ffff9b2c80fc7978 EFLAGS: 00010287 febr 04 15:52:16 hn kernel: RAX: ffff9b2c90305000 RBX: ffff8bb5912b6880 RCX: ffff9b2c90305044 febr 04 15:52:16 hn kernel: RDX: 0000000000000000 RSI: 00000000000001a8 RDI: 0000000000000150 febr 04 15:52:16 hn kernel: RBP: ffff9b2c80fc7988 R08: 0000000000000001 R09: 0000000000000004 febr 04 15:52:16 hn kernel: R10: 0000000000000002 R11: ffff8bb5912b6880 R12: 0000000002000022 febr 04 15:52:16 hn kernel: R13: ffff8bb5912b6880 R14: ffff8bb58e230600 R15: ffff8bb58e6c8000 febr 04 15:52:16 hn kernel: FS: 00007fb6a9ccd8c0(0000) GS:ffff8bb597d80000(0000) knlGS:0000000000000000 febr 04 15:52:16 hn kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 febr 04 15:52:16 hn kernel: CR2: 0000000000000008 CR3: 000000010ddec000 CR4: 00000000000006e0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1814555 Title: Ubuntu boot failure. 4.18.0-14 boot stalls. (does not boot) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1814555/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
