I am having this issue on Xubuntu Xenial with the linux-generic- hwe-16.04-edge kernel. It happened once a long time ago, but now it is happening again. This bug happens when the system is under load and more graphical load is demanded. On my specific case, when my system is already under some load and then I open a software which demands both high video memory (shared memory) and RAM memory, as games can do, then the system freezes.
I can see the memory usage increase while the software is loading, until the system completely freezes. To reboot, the two options are a hard reset or SysRq keys. My computer is a Lenovo Ideapad 310, with a Intel Core i3-6100U, with a Intel HD Graphics 520 graphical chip. It has 4 GB of RAM and, when the bug happens, there is always heavy RAM usage. This bug never happened to me without high RAM usage. This bug is not easy to reproduce, but with some tries while the system is under load it is possible to freeze the system. Here is my log. I was watching a video on YouTube while I was chatting in Discord, with Steam opened and was loading the game Robocraft. Basically, heavy load. As the Robocraft loaded, it required both RAM and video memory, which weren't plentiful due to the other software's usage. Then it crashed. Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.020383] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.020455] IP: gen8_ppgtt_alloc_page_directories.isra.38+0x124/0x270 [i915] Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.021756] PGD 1649d2067 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.021757] PUD 16c731067 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.023034] PMD 0 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.024842] Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.026857] Oops: 0002 [#1] SMP Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.027842] Modules linked in: ccm xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 bridge stp llc ebtable_filter ebtables rfcomm bnep binfmt_misc nls_iso8859_1 arc4 rtsx_usb_ms memstick uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core videodev media snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_codec_generic snd_soc_skl snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_ext_core snd_soc_sst_match snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_pcm snd_seq_midi snd_seq_midi_event aesni_intel ath10k_pci ath10k_core aes_x86_64 crypto_simd glue_helper ath cryptd Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.033493] snd_rawmidi mac80211 intel_cstate snd_seq snd_seq_device intel_rapl_perf snd_timer cfg80211 joydev input_leds snd serio_raw soundcore shpchp mei_me mei btusb intel_pch_thermal btrtl ucsi hci_uart btbcm btqca ideapad_laptop btintel sparse_keymap bluetooth kvm_intel kvm acpi_pad mac_hid tpm_crb intel_lpss_acpi irqbypass intel_lpss ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT nf_reject_ipv4 nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_tcpudp xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat libcrc32c parport_pc nf_conntrack_ftp nf_conntrack ppdev iptable_filter lp parport ip_tables x_tables autofs4 hid_generic rtsx_usb_sdmmc usbhid rtsx_usb Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.039632] uas usb_storage i915 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect psmouse sysimgblt fb_sys_fops drm ahci r8169 libahci mii wmi i2c_hid hid video pinctrl_sunrisepoint pinctrl_intel fjes Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.042237] CPU: 3 PID: 11048 Comm: opera-developer Not tainted 4.10.0-22-generic #24~16.04.1-Ubuntu Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.043552] Hardware name: LENOVO 80UG/Toronto 4A2, BIOS 0XCN42WW 04/21/2017 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.044877] task: ffff94bb13bd1700 task.stack: ffffa74ec34e8000 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.046185] RIP: 0010:gen8_ppgtt_alloc_page_directories.isra.38+0x124/0x270 [i915] Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.047499] RSP: 0018:ffffa74ec34eb878 EFLAGS: 00010246 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.048905] RAX: ffff94ba258cba00 RBX: 0000000000000003 RCX: 0000000000000003 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.050207] RDX: 0000000000000000 RSI: ffff94ba42aca000 RDI: ffff94bb25758000 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.051497] RBP: ffffa74ec34eb8d8 R08: 0000000000000018 R09: 0000000000000000 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.052771] R10: 0000000000000000 R11: fffff5ef01adb520 R12: ffff94badb87c000 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.054059] R13: ffff94bb101cbb10 R14: 00000000fffd7000 R15: 0000000000008000 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.055411] FS: 00007f0ec56e3a80(0000) GS:ffff94bb33580000(0000) knlGS:0000000000000000 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.056770] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.058415] CR2: 0000000000000018 CR3: 0000000139fdf000 CR4: 00000000003406e0 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.059691] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.060982] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.062151] Call Trace: Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.063371] gen8_alloc_va_range_3lvl+0xf3/0x9b0 [i915] Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.064607] ? set_next_entity+0xc3/0x1b0 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.065765] gen8_alloc_va_range+0x23e/0x490 [i915] Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.066941] i915_vma_bind+0x6a/0x170 [i915] Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.068080] __i915_vma_do_pin+0x2a5/0x450 [i915] Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.069223] i915_gem_execbuffer_reserve_vma.isra.31+0x144/0x1b0 [i915] Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.070358] i915_gem_execbuffer_reserve.isra.32+0x388/0x3b0 [i915] Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.071533] i915_gem_do_execbuffer.isra.38+0x4f7/0x1570 [i915] Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.072639] ? krealloc+0x79/0xc0 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.073726] ? reservation_object_get_fences_rcu+0x94/0x240 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.074808] ? i915_gem_object_wait_reservation+0x18f/0x1e0 [i915] Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.075896] i915_gem_execbuffer2+0xa2/0x1e0 [i915] Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.076966] drm_ioctl+0x21b/0x4d0 [drm] Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.078026] ? i915_gem_execbuffer+0x310/0x310 [i915] Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.079130] ? __seccomp_filter+0x67/0x250 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.080191] ? pick_next_task_fair+0x3d6/0x4d0 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.081248] do_vfs_ioctl+0xa1/0x5f0 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.082308] ? __secure_computing+0x3b/0xd0 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.083373] ? syscall_trace_enter+0xcd/0x2f0 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.084517] SyS_ioctl+0x79/0x90 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.085526] do_syscall_64+0x5b/0xc0 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.086514] entry_SYSCALL64_slow_path+0x25/0x25 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.087473] RIP: 0033:0x7f0ebdd34357 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.088410] RSP: 002b:00007ffc76da95f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.089323] RAX: ffffffffffffffda RBX: 000016019996b000 RCX: 00007f0ebdd34357 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.090222] RDX: 00007ffc76da9640 RSI: 0000000040406469 RDI: 0000000000000086 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.091107] RBP: 00007ffc76da9640 R08: 000016019a7d4c80 R09: 0000000000000000 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.091946] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000040406469 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.092750] R13: 0000000000000086 R14: 000016019998a790 R15: 0000000000000050 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.093518] Code: 20 03 00 00 48 8b b8 d8 02 00 00 48 8b 52 08 48 83 ca 03 e8 1f cd ff ff 48 8b 45 a8 4c 8b 45 c8 48 8b 4d c0 48 8b 10 48 8b 45 d0 <4e> 89 24 02 48 0f ab 08 0f 1f 44 00 00 e9 44 ff ff ff 81 fb 00 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.095127] RIP: gen8_ppgtt_alloc_page_directories.isra.38+0x124/0x270 [i915] RSP: ffffa74ec34eb878 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.095907] CR2: 0000000000000018 Jun 9 22:00:54 usuario-Lenovo-ideapad-310-14ISK kernel: [16404.100725] ---[ end trace 3da33a9edc49d9fc ]--- -- 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/1680904 Title: zesty unable to handle kernel NULL pointer dereference Status in linux package in Ubuntu: In Progress Status in linux source package in Zesty: In Progress Bug description: Upgraded to zesty about a week ago. Ran into this on latest kernel. (during high load, nothing in particular seems to cause it to happen). Did not happen with previous (4.10.0.14.16) kernel. Only after update to 4.10.0.15.17, has happened about 3 times since then (or other crashes), this is the one I could capture. kern.log entries below. Let me know if you need anything else from me. Thanks! Apr 7 11:20:28 doe kernel: [26003.796278] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 Apr 7 11:20:28 doe kernel: [26003.796375] IP: gen8_ppgtt_alloc_page_directories.isra.38+0x115/0x250 [i915] Apr 7 11:20:28 doe kernel: [26003.796404] PGD 0 Apr 7 11:20:28 doe kernel: [26003.796405] Apr 7 11:20:28 doe kernel: [26003.796427] Oops: 0002 [#1] SMP Apr 7 11:20:28 doe kernel: [26003.796441] Modules linked in: xt_REDIRECT nf_nat_redirect xt_hl scsi_transport_iscsi binfmt_misc veth ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_filter ip6_tables ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_CHECKSUM xt_comment xt_tcpudp iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack libcrc32c iptable_mangle iptable_filter ccm rfcomm bridge stp llc cmac bnep zfs(PO) zunicode(PO) zavl(PO) zcommon(PO) znvpair(PO) spl(O) nls_iso8859_1 hid_multitouch joydev i2c_designware_platform i2c_designware_core snd_hda_codec_hdmi snd_soc_skl snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_codec_realtek snd_hda_ext_core snd_soc_sst_match snd_hda_codec_generic snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine snd_hda_intel snd_hda_codec snd_hda_core asus_nb_wmi Apr 7 11:20:28 doe kernel: [26003.796722] snd_hwdep asus_wmi sparse_keymap snd_pcm arc4 snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device iwlmvm snd_timer mac80211 intel_rapl x86_pkg_temp_thermal snd intel_powerclamp uvcvideo coretemp kvm_intel iwlwifi videobuf2_vmalloc kvm videobuf2_memops irqbypass videobuf2_v4l2 intel_cstate videobuf2_core intel_rapl_perf cfg80211 videodev input_leds serio_raw media shpchp soundcore btusb btrtl hci_uart btbcm elan_i2c btqca btintel acpi_als int3403_thermal bluetooth kfifo_buf industrialio mac_hid idma64 mei_me virt_dma intel_pch_thermal acpi_pad int3400_thermal intel_lpss_pci int3402_thermal mei intel_lpss_acpi acpi_thermal_rel processor_thermal_device intel_lpss tpm_crb int340x_thermal_zone int3406_thermal intel_soc_dts_iosf asus_wireless parport_pc ppdev lp parport ip_tables Apr 7 11:20:28 doe kernel: [26003.797026] x_tables autofs4 algif_skcipher af_alg dm_crypt crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc i915 aesni_intel aes_x86_64 crypto_simd glue_helper cryptd i2c_algo_bit drm_kms_helper syscopyarea sysfillrect ahci sysimgblt libahci fb_sys_fops drm wmi i2c_hid hid pinctrl_sunrisepoint video pinctrl_intel fjes Apr 7 11:20:28 doe kernel: [26003.797142] CPU: 0 PID: 8418 Comm: chromium-browse Tainted: P O 4.10.0-15-generic #17-Ubuntu Apr 7 11:20:28 doe kernel: [26003.797175] Hardware name: ASUSTeK COMPUTER INC. UX305CA/UX305CA, BIOS UX305CA.201 09/11/2015 Apr 7 11:20:28 doe kernel: [26003.797206] task: ffff9bbaa201dc00 task.stack: ffffc25b5ea8c000 Apr 7 11:20:28 doe kernel: [26003.797250] RIP: 0010:gen8_ppgtt_alloc_page_directories.isra.38+0x115/0x250 [i915] Apr 7 11:20:28 doe kernel: [26003.797279] RSP: 0018:ffffc25b5ea8f880 EFLAGS: 00010246 Apr 7 11:20:28 doe kernel: [26003.797299] RAX: ffff9bba689be580 RBX: 0000000000000003 RCX: 0000000000000003 Apr 7 11:20:28 doe kernel: [26003.797325] RDX: 0000000000000000 RSI: ffff9bbae7c0a000 RDI: ffff9bbba0418000 Apr 7 11:20:28 doe kernel: [26003.797351] RBP: ffffc25b5ea8f8d8 R08: 0000000000000000 R09: 0000000000000000 Apr 7 11:20:28 doe kernel: [26003.797378] R10: 0000000000000000 R11: 0000000000000041 R12: ffff9bbb5f00a000 Apr 7 11:20:28 doe kernel: [26003.797405] R13: ffff9bbba932bb10 R14: 00000000fff97000 R15: 0000000000008000 Apr 7 11:20:28 doe kernel: [26003.797440] FS: 00007f70bd1df6c0(0000) GS:ffff9bbbb3c00000(0000) knlGS:0000000000000000 Apr 7 11:20:28 doe kernel: [26003.797470] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Apr 7 11:20:28 doe kernel: [26003.797497] CR2: 0000000000000018 CR3: 0000000169420000 CR4: 00000000003406f0 Apr 7 11:20:28 doe kernel: [26003.797523] Call Trace: Apr 7 11:20:28 doe kernel: [26003.797553] gen8_alloc_va_range_3lvl+0xfb/0x9e0 [i915] Apr 7 11:20:28 doe kernel: [26003.797576] ? __alloc_pages_nodemask+0x209/0x260 Apr 7 11:20:28 doe kernel: [26003.797610] gen8_alloc_va_range+0x23d/0x470 [i915] Apr 7 11:20:28 doe kernel: [26003.797648] i915_vma_bind+0x7e/0x170 [i915] Apr 7 11:20:28 doe kernel: [26003.797683] __i915_vma_do_pin+0x2a5/0x450 [i915] Apr 7 11:20:28 doe kernel: [26003.797720] i915_gem_execbuffer_reserve_vma.isra.31+0x144/0x1b0 [i915] Apr 7 11:20:28 doe kernel: [26003.797761] i915_gem_execbuffer_reserve.isra.32+0x39e/0x3d0 [i915] Apr 7 11:20:28 doe kernel: [26003.797800] i915_gem_do_execbuffer.isra.38+0x4a2/0x1750 [i915] Apr 7 11:20:28 doe kernel: [26003.797824] ? radix_tree_lookup_slot+0x22/0x50 Apr 7 11:20:28 doe kernel: [26003.797846] ? shmem_getpage_gfp+0xf9/0xc10 Apr 7 11:20:28 doe kernel: [26003.797881] i915_gem_execbuffer2+0xa1/0x1e0 [i915] Apr 7 11:20:28 doe kernel: [26003.797917] drm_ioctl+0x21b/0x4c0 [drm] Apr 7 11:20:28 doe kernel: [26003.797948] ? i915_gem_execbuffer+0x310/0x310 [i915] Apr 7 11:20:28 doe kernel: [26003.797969] ? __seccomp_filter+0x67/0x250 Apr 7 11:20:28 doe kernel: [26003.797990] do_vfs_ioctl+0xa3/0x610 Apr 7 11:20:28 doe kernel: [26003.798012] ? __secure_computing+0x3f/0xd0 Apr 7 11:20:28 doe kernel: [26003.798039] ? syscall_trace_enter+0xcd/0x2e0 Apr 7 11:20:28 doe kernel: [26003.798064] SyS_ioctl+0x79/0x90 Apr 7 11:20:28 doe kernel: [26003.798085] do_syscall_64+0x5b/0xc0 Apr 7 11:20:28 doe kernel: [26003.798102] entry_SYSCALL64_slow_path+0x25/0x25 Apr 7 11:20:28 doe kernel: [26003.798120] RIP: 0033:0x7f70a7aa7907 Apr 7 11:20:28 doe kernel: [26003.798135] RSP: 002b:00007ffe44fb4878 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 Apr 7 11:20:28 doe kernel: [26003.798163] RAX: ffffffffffffffda RBX: 0000559898103980 RCX: 00007f70a7aa7907 Apr 7 11:20:28 doe kernel: [26003.798188] RDX: 00007ffe44fb48c0 RSI: 00000000c0406469 RDI: 00000000000000ef Apr 7 11:20:28 doe kernel: [26003.798214] RBP: 00007ffe44fb48c0 R08: 0000000000000000 R09: 0000000000000000 Apr 7 11:20:28 doe kernel: [26003.798240] R10: 0000000000000050 R11: 0000000000000246 R12: 00000000c0406469 Apr 7 11:20:28 doe kernel: [26003.798266] R13: 00000000000000ef R14: 0000000000000000 R15: 0000000000000000 Apr 7 11:20:28 doe kernel: [26003.798293] Code: e6 48 8b 90 20 03 00 00 48 8b b8 d8 02 00 00 48 8b 52 08 48 83 ca 03 e8 ca cd ff ff 48 8b 45 b0 48 8b 4d c8 48 8b 10 48 8b 45 d0 <4c> 89 24 ca 48 0f ab 08 0f 1f 44 00 00 e9 53 ffff ff 65 8b 05 Apr 7 11:20:28 doe kernel: [26003.798399] RIP: gen8_ppgtt_alloc_page_directories.isra.38+0x115/0x250 [i915] RSP: ffffc25b5ea8f880 Apr 7 11:20:28 doe kernel: [26003.798435] CR2: 0000000000000018 Apr 7 11:20:28 doe kernel: [26003.826121] ---[ end trace 667fce1b2de2d471 ]--- ProblemType: Bug DistroRelease: Ubuntu 17.04 Package: linux-image-4.10.0-15-generic 4.10.0-15.17 ProcVersionSignature: Ubuntu 4.10.0-15.17-generic 4.10.5 Uname: Linux 4.10.0-15-generic x86_64 NonfreeKernelModules: zfs zunicode zavl zcommon znvpair ApportVersion: 2.20.4-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: lutostag 3280 F.... pulseaudio CurrentDesktop: Unity:Unity7 Date: Fri Apr 7 11:30:42 2017 HibernationDevice: RESUME=UUID=f32bc2f0-9063-4554-8204-936f2f51ffb3 InstallationDate: Installed on 2016-09-20 (199 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 8087:0a2a Intel Corp. Bus 001 Device 002: ID 0bda:57cb Realtek Semiconductor Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: ASUSTeK COMPUTER INC. UX305CA ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.10.0-15-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.10.0-15-generic N/A linux-backports-modules-4.10.0-15-generic N/A linux-firmware 1.164 SourcePackage: linux UpgradeStatus: Upgraded to zesty on 2017-03-27 (10 days ago) dmi.bios.date: 09/11/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: UX305CA.201 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: UX305CA dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: ATN12345678901234567 dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX305CA.201:bd09/11/2015:svnASUSTeKCOMPUTERINC.:pnUX305CA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX305CA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.name: UX305CA dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. 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