Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.16 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/v4.16-rc1/


** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1748678

Title:
  Intel graphics timeout, possibly caused wifi network to fail

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  My wifi network device stopped responding, unable to list any local
  wifi networks, which required turning off the adapter in settings and
  back-on again. while investigating I found the following in the dmesg
  output from the time the network device stopped responding. This is
  the only relevant message in recent history so I'm working on the
  assumption that somehow the intel gfx timeout knocked-onto the wifi
  device or the pci bus.

  === lcpsi of wifi card ===
  03:00.0 Network controller: Broadcom Limited BCM4331 802.11a/b/g/n (rev 02)
   Subsystem: Apple Inc. AirPort Extreme
   Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
   Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
   Latency: 0, Cache Line Size: 256 bytes
   Interrupt: pin A routed to IRQ 17
   Region 0: Memory at a0500000 (64-bit, non-prefetchable) [size=16K]
   Capabilities: <access denied>
   Kernel driver in use: wl
   Kernel modules: bcma, wl

  === lspci of gfx ===
  00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor 
Graphics Controller (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Apple Inc. 3rd Gen Core processor Graphics Controller
   Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
   Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
   Latency: 0
   Interrupt: pin A routed to IRQ 32
   Region 0: Memory at a0000000 (64-bit, non-prefetchable) [size=4M]
   Region 2: Memory at 90000000 (64-bit, prefetchable) [size=256M]
   Region 4: I/O ports at 2000 [size=64]
   [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
   Capabilities: <access denied>
   Kernel driver in use: i915
   Kernel modules: i915

  === relevant dmesg output ===
  [ 7450.338278] pipe A vblank wait timed out
  [ 7450.338321] ------------[ cut here ]------------
  [ 7450.338380] WARNING: CPU: 2 PID: 29153 at 
/build/linux-UKCsxy/linux-4.13.0/drivers/gpu/drm/i915/intel_display.c:12848 
intel_atomic_commit_tail+0xf7d/0xf90 [i915]
  [ 7450.338380] Modules linked in: rfcomm scsi_transport_iscsi binfmt_misc 
veth ebtable_filter ebtables ip6t_MASQUERADE nf_nat_masquerade_ipv6 
ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 xt_CHECKSUM 
xt_comment xt_tcpudp iptable_mangle unix_diag ipt_MASQUERADE 
nf_nat_masquerade_ipv4 nf_conntrack_netlink nfnetlink xfrm_user xfrm_algo 
iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype 
xt_conntrack nf_nat nf_conntrack libcrc32c l2tp_ppp l2tp_netlink l2tp_core 
ip6_udp_tunnel udp_tunnel pppox mmc_block cmac bnep joydev applesmc 
input_polldev snd_hda_codec_hdmi snd_hda_codec_cirrus snd_hda_codec_generic 
snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm intel_rapl 
x86_pkg_temp_thermal intel_powerclamp coretemp snd_seq_midi snd_seq_midi_event 
snd_rawmidi bcm5974 kvm_intel
  [ 7450.338405]  btusb btrtl uvcvideo btbcm btintel kvm bluetooth irqbypass 
videobuf2_vmalloc videobuf2_memops snd_seq ecdh_generic videobuf2_v4l2 
videobuf2_core videodev intel_cstate intel_rapl_perf media wl(POE) input_leds 
snd_seq_device snd_timer mei_me lpc_ich cfg80211 mei snd soundcore thunderbolt 
sbs shpchp sbshc apple_gmux acpi_als kfifo_buf industrialio apple_bl mac_hid 
iptable_filter ip6table_filter ip6_tables br_netfilter bridge stp llc 
arp_tables parport_pc ppdev lp parport ip_tables x_tables autofs4 btrfs xor 
raid6_pq algif_skcipher af_alg hid_generic hid_apple usbhid hid dm_crypt 
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc i915 sdhci_pci ahci 
aesni_intel libahci sdhci i2c_algo_bit aes_x86_64 drm_kms_helper crypto_simd 
glue_helper syscopyarea cryptd sysfillrect sysimgblt fb_sys_fops
  [ 7450.338442]  drm video
  [ 7450.338445] CPU: 2 PID: 29153 Comm: kworker/u8:6 Tainted: P           OE   
4.13.0-32-generic #35-Ubuntu
  [ 7450.338446] Hardware name: Apple Inc. MacBookPro10,2/Mac-AFD8A9D944EA4843, 
BIOS MBP102.88Z.010B.B00.1708080805 08/08/2017
  [ 7450.338478] Workqueue: events_unbound intel_atomic_commit_work [i915]
  [ 7450.338479] task: ffff9873194445c0 task.stack: ffffb24909028000
  [ 7450.338506] RIP: 0010:intel_atomic_commit_tail+0xf7d/0xf90 [i915]
  [ 7450.338507] RSP: 0018:ffffb2490902bd90 EFLAGS: 00010286
  [ 7450.338508] RAX: 000000000000001c RBX: 0000000000000000 RCX: 
0000000000000000
  [ 7450.338509] RDX: 0000000000000000 RSI: ffff98732f316578 RDI: 
ffff98732f316578
  [ 7450.338509] RBP: ffffb2490902be48 R08: 0000000000000001 R09: 
00000000000004b1
  [ 7450.338510] R10: ffffb2490902bd90 R11: 0000000000000000 R12: 
0000000000066ddd
  [ 7450.338511] R13: ffff98731ab20000 R14: ffff98731a7ea000 R15: 
0000000000000001
  [ 7450.338512] FS:  0000000000000000(0000) GS:ffff98732f300000(0000) 
knlGS:0000000000000000
  [ 7450.338512] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [ 7450.338513] CR2: 000007ee6fce1000 CR3: 00000001e440a006 CR4: 
00000000001606e0
  [ 7450.338514] Call Trace:
  [ 7450.338519]  ? dequeue_task_fair+0x49f/0x640
  [ 7450.338521]  ? wait_woken+0x80/0x80
  [ 7450.338545]  intel_atomic_commit_work+0x12/0x20 [i915]
  [ 7450.338547]  process_one_work+0x1e7/0x410
  [ 7450.338550]  worker_thread+0x4b/0x420
  [ 7450.338553]  kthread+0x125/0x140
  [ 7450.338554]  ? process_one_work+0x410/0x410
  [ 7450.338556]  ? kthread_create_on_node+0x70/0x70
  [ 7450.338558]  ret_from_fork+0x1f/0x30
  [ 7450.338560] Code: ff ff ff 48 83 c7 08 e8 52 f0 67 e0 4c 8b 85 70 ff ff ff 
4d 85 c0 0f 85 7b fa ff ff 8d 73 41 48 c7 c7 20 95 71 c0 e8 24 a3 69 e0 <0f> ff 
e9 65 fa ff ff 66 90 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
  [ 7450.338585] ---[ end trace 25a68c51a0b339ee ]---

  === dmesg after turning wifi off and on subsequent to failure ===
  [ 8693.378637] ERROR @wl_dev_intvar_get : 
  [ 8693.378639] error (-1)
  [ 8693.378641] ERROR @wl_cfg80211_get_tx_power : 
  [ 8693.378642] error (-1)

  
  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: linux-image-4.13.0-32-generic 4.13.0-32.35
  ProcVersionSignature: Ubuntu 4.13.0-32.35-generic 4.13.13
  Uname: Linux 4.13.0-32-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.7-0ubuntu3.7
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Feb 10 23:55:17 2018
  InstallationDate: Installed on 2017-12-27 (45 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
  MachineType: Apple Inc. MacBookPro10,2
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-32-generic 
root=UUID=7cb29c7e-8fcd-46be-b0ef-765c9272df16 ro rootflags=subvol=@ quiet 
splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.13.0-32-generic N/A
   linux-backports-modules-4.13.0-32-generic  N/A
   linux-firmware                             1.169.2
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/08/2017
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBP102.88Z.010B.B00.1708080805
  dmi.board.asset.tag: Base Board Asset Tag#
  dmi.board.name: Mac-AFD8A9D944EA4843
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookPro10,2
  dmi.chassis.type: 10
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-AFD8A9D944EA4843
  dmi.modalias: 
dmi:bvnAppleInc.:bvrMBP102.88Z.010B.B00.1708080805:bd08/08/2017:svnAppleInc.:pnMacBookPro10,2:pvr1.0:rvnAppleInc.:rnMac-AFD8A9D944EA4843:rvrMacBookPro10,2:cvnAppleInc.:ct10:cvrMac-AFD8A9D944EA4843:
  dmi.product.family: Mac
  dmi.product.name: MacBookPro10,2
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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