I installed again the 4.2 kernel yesterday after lunch and it happened again at 16:52:02. You can see the kernel messages at that time in syslog below:
13143 Mar 8 16:14:44 my-ubuntu compiz: pam_ecryptfs: seteuid error 13144 Mar 8 16:17:01 my-ubuntu CRON[10531]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) 13145 Mar 8 15:18:38 my-ubuntu avahi-daemon[865]: Invalid response packet from host fe80::6e40:8ff:fe8c:be7a. 13146 Mar 8 16:40:41 my-ubuntu avahi-daemon[865]: Invalid response packet from host fe80::6a5b:35ff:febd:7254. 13147 Mar 8 16:50:02 my-ubuntu kernel: [ 8849.220446] [drm] HPD interrupt storm detected on connector HDMI-A-1: switching from hotplug detection to polling 13148 Mar 8 16:52:02 my-ubuntu kernel: [ 8969.150065] BUG: unable to handle kernel NULL pointer dereference at 00000000000000d4 13149 Mar 8 16:52:02 my-ubuntu kernel: [ 8969.150111] IP: [<ffffffffc02d5457>] intel_hpd_irq_reenable_work+0xa7/0x150 [i915] 13150 Mar 8 16:52:02 my-ubuntu kernel: [ 8969.150205] PGD c912b067 PUD c912a067 PMD 0 13151 Mar 8 16:52:02 my-ubuntu kernel: [ 8969.150231] Oops: 0000 [#1] SMP 13152 Mar 8 16:52:02 my-ubuntu kernel: [ 8969.150247] Modules linked in: uas usb_storage btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c xt_conntrac 13152 k xt_addrtype br_netfilter aufs xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_tcpud 13152 p bridge stp llc iptable_filter ip_tables x_tables cmac snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic pn544_mei mei_phy pn544 hci nfc bnep snd_hda_intel uvcvideo vid 13152 eobuf2_vmalloc snd_hda_codec wl(POE) videobuf2_memops videobuf2_core dell_laptop btusb dell_wmi snd_hda_core dcdbas snd_usb_audio intel_rapl sparse_keymap x86_pkg_temp_thermal rfcomm 13152 btrtl intel_powerclamp btbcm snd_seq_midi snd_usbmidi_lib v4l2_common coretemp btintel snd_hwdep videodev snd_seq_midi_event bluetooth kvm_intel snd_pcm snd_rawmidi asix kvm media u 13152 sbnet mii snd_seq snd_seq_device cfg80211 snd_timer rtsx_pci_ms input_leds memstick joydev snd serio_raw mei_me soundcore shpchp mei ie31200_edac edac_core lpc_ich binfmt_misc nls_is 13152 o8859_1 acpi_als kfifo_buf industrialio int3403_thermal parport_pc ppdev dell_rbtn dell_smo8800 int3400_thermal processor_thermal_device int3402_thermal acpi_thermal_rel intel_soc_dt 13152 s_iosf int340x_thermal_zone mac_hid lp parport drbg ansi_cprng dm_crypt hid_generic usbhid hid rtsx_pci_sdmmc nouveau i915 crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw gf 13152 128mul glue_helper mxm_wmi ttm ablk_helper i2c_algo_bit cryptd drm_kms_helper psmouse ahci drm libahci rtsx_pci video wmi 13153 Mar 8 16:52:02 my-ubuntu kernel: [ 8969.150825] CPU: 0 PID: 10468 Comm: kworker/0:4 Tainted: P OE 4.2.0-30-generic #36~14.04.1-Ubuntu 13154 Mar 8 16:52:02 my-ubuntu kernel: [ 8969.150859] Hardware name: Dell Inc. XPS 15 9530/XPS 15 9530, BIOS A09 07/30/2015 13155 Mar 8 16:52:02 my-ubuntu kernel: [ 8969.150922] Workqueue: events intel_hpd_irq_reenable_work [i915] 13156 Mar 8 16:52:02 my-ubuntu kernel: [ 8969.150943] task: ffff880050820000 ti: ffff880284870000 task.ti: ffff880284870000 13157 Mar 8 16:52:02 my-ubuntu kernel: [ 8969.150966] RIP: 0010:[<ffffffffc02d5457>] [<ffffffffc02d5457>] intel_hpd_irq_reenable_work+0xa7/0x150 [i915] 13158 Mar 8 16:52:02 my-ubuntu kernel: [ 8969.151020] RSP: 0000:ffff880284873da8 EFLAGS: 00010002 13159 Mar 8 16:52:02 my-ubuntu kernel: [ 8969.151037] RAX: 0000000000000000 RBX: ffff880416c20800 RCX: ffff88041cdfbb38 13160 Mar 8 16:52:02 my-ubuntu kernel: [ 8969.151062] RDX: ffff880416c20818 RSI: 0000000000000202 RDI: ffff8804172d7b08 13161 Mar 8 16:52:02 my-ubuntu kernel: [ 8969.151085] RBP: ffff880284873df8 R08: 0000000000000001 R09: 0000000000000000 13162 Mar 8 16:52:02 my-ubuntu kernel: [ 8969.151107] R10: ffff88041cdfb800 R11: 0000000000000005 R12: 0000000000000004 13163 Mar 8 16:52:02 my-ubuntu kernel: [ 8969.151130] R13: ffff8804172d0000 R14: ffff8804172d7cc0 R15: ffff8804172d7c84 13164 Mar 8 16:52:02 my-ubuntu kernel: [ 8969.151152] FS: 0000000000000000(0000) GS:ffff88042fa00000(0000) knlGS:0000000000000000 13165 Mar 8 16:52:02 my-ubuntu kernel: [ 8969.151177] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 13166 Mar 8 16:52:02 my-ubuntu kernel: [ 8969.151196] CR2: 00000000Mar 9 06:49:01 my-ubuntu rsyslogd: [origin software="rsyslogd" swVersion="7.4.4" x-pid="885" x- 13166 info="http://www.rsyslog.com";] start 13167 Mar 9 06:49:01 my-ubuntu rsyslogd: rsyslogd's groupid changed to 104 13168 Mar 9 06:49:01 my-ubuntu rsyslogd: rsyslogd's userid changed to 101 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1552333 Title: After upgrade to 4.2 kernel Ubuntu 14.04 LTS randomly freezes completely To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1552333/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
