i915-bpo crashes on external hdmi input

[Chris J Arges]

This issue happens when plugging in an external HDMI projector in mirrored mode.

To reproduce this issue:
1) Plug in external HDMI monitor
2) Set mirrored displays
3) Unplug HDMI
4) check dmesg for warnings

--

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-22-generic 4.4.0-22.39
ProcVersionSignature: Ubuntu 4.4.0-22.39-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: mark 4296 F.... pulseaudio
Date: Tue May 10 10:25:07 2016
InstallationDate: Installed on 2016-05-02 (8 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 003: ID 04f3:21d4 Elan Microelectronics Corp.
 Bus 001 Device 002: ID 0a5c:6410 Broadcom Corp.
 Bus 001 Device 004: ID 0c45:6713 Microdia
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. XPS 15 9550
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=linux
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-22-generic.efi.signed root=UUID=3643ef37-7cee-41b3-9387-2faa819c44db ro quiet splash vt.handoff=7
PulseList:
 Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
 No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-22-generic N/A
 linux-backports-modules-4.4.0-22-generic N/A
 linux-firmware 1.157
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/07/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 01.02.00
dmi.board.name: 0N7TVV
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr01.02.00:bd04/07/2016:svnDellInc.:pnXPS159550:pvr:rvnDellInc.:rn0N7TVV:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: XPS 15 9550
dmi.sys.vendor: Dell Inc.

[Brad Figg (brad-figg)]

This change was made by a bot.

[Robert Hooker (sarvatt)]

https://bugs.freedesktop.org/show_bug.cgi?id=89055

[Timo Aaltonen (tjaalton)]

If you mean the dmesg spam then yes 89055 is your bug.

[Chris J Arges (arges)]

Also related: https://bugs.freedesktop.org/show_bug.cgi?id=94567

[Chris J Arges (arges)]

I've also tested this on 4.4.0-22 with i915 patches here:
http://koti.kapsi.fi/~tjaalton/skl/mst/
And the problem persists.

In addition I've tested a 4.6 mainline from 5/8 and the problem persists there as well.

Here is the warning from the mainline kernel:
[ 44.871672] ------------[ cut here ]------------
[ 44.871687] WARNING: CPU: 1 PID: 871 at /home/kernel/COD/linux/drivers/gpu/drm/i915/intel_pm.c:3586 skl_update_other_pipe_wm+0x16c/0x180 [i915]
[ 44.871688] WARN_ON(!wm_changed)
[ 44.871688] Modules linked in:
[ 44.871689] rfcomm bnep snd_hda_codec_hdmi dell_led brcmfmac snd_hda_codec_realtek intel_rapl snd_hda_codec_generic x86_pkg_temp_thermal intel_powerclamp brcmutil coretemp uvcvideo cfg80211 i2c_designware_platform i2c_designware_core kvm_intel videobuf2_vmalloc kvm snd_hda_intel videobuf2_memops snd_hda_codec videobuf2_v4l2 dell_wmi dell_laptop videobuf2_core dell_smbios snd_hda_core videodev dcdbas rtsx_pci_ms irqbypass snd_hwdep media memstick snd_pcm hid_multitouch crct10dif_pclmul snd_seq_midi crc32_pclmul btusb btrtl ghash_clmulni_intel snd_seq_midi_event snd_rawmidi aesni_intel snd_seq snd_seq_device aes_x86_64 lrw snd_timer gf128mul glue_helper snd ablk_helper cryptd soundcore hci_uart btbcm btqca idma64 joydev input_leds shpchp btintel virt_dma mei_me serio_raw bluetooth mei processor_thermal_device
[ 44.871711] intel_lpss_pci intel_soc_dts_iosf acpi_als kfifo_buf industrialio intel_lpss_acpi intel_hid dell_smo8800 int3403_thermal int3400_thermal int3402_thermal intel_lpss acpi_pad sparse_keymap int340x_thermal_zone acpi_thermal_rel mac_hid parport_pc ppdev lp parport autofs4 usbhid rtsx_pci_sdmmc nouveau i915 mxm_wmi ttm i2c_algo_bit drm_kms_helper psmouse syscopyarea sysfillrect sysimgblt nvme fb_sys_fops uas nvme_core ahci drm usb_storage rtsx_pci libahci i2c_hid hid wmi pinctrl_sunrisepoint video pinctrl_intel fjes
[ 44.871727] CPU: 1 PID: 871 Comm: Xorg Not tainted 4.6.0-999-generic #201605082200
[ 44.871728] Hardware name: Dell Inc. XPS 15 9550/0N7TVV, BIOS 01.02.00 04/07/2016
[ 44.871729] 0000000000000286 0000000052e51aba ffff8808985bf918 ffffffff813f2ea3
[ 44.871731] ffff8808985bf968 0000000000000000 ffff8808985bf958 ffffffff8108294b
[ 44.871732] 00000e0200000000 ffff880891b41000 ffff8800219d9da4 ffff880891b42000
[ 44.871733] Call Trace:
[ 44.871736] [<ffffffff813f2ea3>] dump_stack+0x63/0x90
[ 44.871739] [<ffffffff8108294b>] __warn+0xcb/0xf0
[ 44.871740] [<ffffffff810829cf>] warn_slowpath_fmt+0x5f/0x80
[ 44.871749] [<ffffffffc022c6ac>] skl_update_other_pipe_wm+0x16c/0x180 [i915]
[ 44.871758] [<ffffffffc022c845>] skl_update_wm+0x185/0x640 [i915]
[ 44.871769] [<ffffffffc027a455>] ? gen9_write32+0x235/0x370 [i915]
[ 44.871782] [<ffffffffc02b88af>] ? intel_ddi_enable_transcoder_func+0x17f/0x260 [i915]
[ 44.871790] [<ffffffffc023060e>] intel_update_watermarks+0x1e/0x30 [i915]
[ 44.871802] [<ffffffffc029c821>] haswell_crtc_enable+0x321/0x8c0 [i915]
[ 44.871813] [<ffffffffc02991bb>] intel_atomic_commit+0x5fb/0xdd0 [i915]
[ 44.871825] [<ffffffffc00d9c31>] ? drm_atomic_check_only+0x181/0x600 [drm]
[ 44.871832] [<ffffffffc00da0e7>] drm_atomic_commit+0x37/0x60 [...

[Jerry Kao (jerry.kao)]

Can not reproduced this issue on Precision 5510.

All display modes (internal, external, extended, mirror) with HDMI work. Unplug HDMI does not cause crash/hang. But internal display is laggy sometimes on mirror mode and has error message in dmesg when plugin HDMI.

[ 489.340228] [drm:intel_cpu_fifo_underrun_irq_handler [i915_bpo]] *ERROR* CPU pipe A FIFO underrun
[ 666.746115] [drm:intel_cpu_fifo_underrun_irq_handler [i915_bpo]] *ERROR* CPU pipe A FIFO underrun
[ 709.818465] [drm:intel_cpu_fifo_underrun_irq_handler [i915_bpo]] *ERROR* CPU pipe A FIFO underrun

[Jerry Kao (jerry.kao)]

In comment#7, I tested with 16.04 kernel 4.4.0-21 and 4.4.0-22

[Timo Aaltonen (tjaalton)]

On #1581249 you mentioned mainline 4.6 worked, does it work here too? If yes, then you might want to test xenial master-next which has newer i915_bpo

[Dave Chiluk (chiluk)]

Running 4.4.0-23-generic, I see the same errors as https://bugs.freedesktop.org/show_bug.cgi?id=89055

I see
[ 1248.953987] PM: early resume of devices complete after 6.795 msecs
[ 1248.956059] rtc_cmos 00:02: System wakeup disabled by ACPI
[ 1249.227488] usb 1-8: reset high-speed USB device number 3 using xhci_hcd
[ 1249.393400] ------------[ cut here ]------------
[ 1249.393456] WARNING: CPU: 2 PID: 5122 at /build/linux-L7iE5S/linux-4.4.0/ubuntu/i915/intel_pm.c:3586 skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]()
[ 1249.393458] WARN_ON(!wm_changed)
[ 1249.393514] Modules linked in: drbg ansi_cprng ctr ccm xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables overlay bnep snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_codec_generic joydev binfmt_misc arc4 acer_wmi sparse_keymap nls_iso8859_1 intel_rapl snd_soc_skl x86_pkg_temp_thermal uvcvideo intel_powerclamp coretemp videobuf2_vmalloc snd_soc_skl_ipc videobuf2_memops crct10dif_pclmul videobuf2_v4l2 snd_hda_ext_core crc32_pclmul videobuf2_core snd_soc_sst_ipc v4l2_common snd_soc_sst_dsp videodev aesni_intel snd_soc_core media snd_compress ac97_bus snd_pcm_dmaengine
[ 1249.393565] dw_dmac_core aes_x86_64 lrw gf128mul snd_hda_intel glue_helper ablk_helper cryptd snd_hda_codec snd_hda_core snd_hwdep iwlmvm snd_pcm input_leds mac80211 serio_raw btusb thinkpad_acpi btrtl btbcm btintel nvram bluetooth iwlwifi snd_seq_midi snd_seq_midi_event cfg80211 snd_rawmidi mei_me mei snd_seq shpchp snd_seq_device snd_timer snd soundcore mac_hid tpm_crb kvm_intel kvm irqbypass parport_pc ppdev sunrpc lp parport autofs4 i915_bpo intel_ips i2c_algo_bit drm_kms_helper syscopyarea sysfillrect psmouse sysimgblt fb_sys_fops drm nvme wmi video fjes
[ 1249.393570] CPU: 2 PID: 5122 Comm: kworker/u16:12 Tainted: G U W 4.4.0-23-generic #41-Ubuntu
[ 1249.393572] Hardware name: LENOVO 20FBCTO1WW/20FBCTO1WW, BIOS N1FET40W (1.14 ) 04/18/2016
[ 1249.393581] Workqueue: events_unbound async_run_entry_fn
[ 1249.393587] 0000000000000286 00000000280ea446 ffff88040bb6f900 ffffffff813eaa03
[ 1249.393590] ffff88040bb6f948 ffffffffc0224c98 ffff88040bb6f938 ffffffff810810d2
[ 1249.393594] ffff8804093ff000 ffff8804086f9d9c ffff8804093f9000 ffff88040e53eb78
[ 1249.393595] Call Trace:
[ 1249.393605] [<ffffffff813eaa03>] dump_stack+0x63/0x90
[ 1249.393611] [<ffffffff810810d2>] warn_slowpath_common+0x82/0xc0
[ 1249.393615] [<ffffffff8108116c>] warn_slowpath_fmt+0x5c/0x80
[ 1249.393656] [<ffffffffc015667c>] skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]
[ 1249.393693] [<ffffffffc0156816>] skl_update_wm+0x186/0x5f0 [i915_bpo]
[ 1249.393749] [<ffffffffc01e248f>] ? intel_ddi_enable_transcoder_func+0x17f/0x260 [i915_bpo]
[ 1249.393786] [<ffffffffc015a53e>] intel_update_watermarks+0x1e/0x30 [i915_bpo]
[ 1249.393841] [<ffffffffc01c6521>] haswell_crtc_enable+0x321/0x8c0 [i915_bpo]
[ 1249.393893] [<ffffffffc01b2b9e>] ? intel_finish_crtc_commit+0xe/0x10 [i915_bpo]
[ 1249.393911] [<ffff...

[Nara Huang (narahuang)]

Using kernel 4.4.0-24.43, had same error with #10:

Jun 13 03:00:02 u-XPS-15-9550 kernel: [ 143.899763] ------------[ cut here ]------------
Jun 13 03:00:02 u-XPS-15-9550 kernel: [ 143.899808] WARNING: CPU: 6 PID: 959 at /build/linux-oXTOqc/linux-4.4.0/ubuntu/i915/intel_pm.c:3586 skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]()
Jun 13 03:00:02 u-XPS-15-9550 kernel: [ 143.899812] WARN_ON(!wm_changed)
Jun 13 03:00:02 u-XPS-15-9550 kernel: [ 143.899814] Modules linked in: rfcomm bnep snd_hda_codec_hdmi dell_led snd_hda_codec_realtek 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 i2c_designware_platform coretemp dell_wmi i2c_designware_core snd_seq_midi sparse_keymap nls_iso8859_1 snd_seq_midi_event kvm_intel dell_laptop kvm dcdbas irqbypass crct10dif_pclmul crc32_pclmul snd_rawmidi aesni_intel uvcvideo aes_x86_64 videobuf2_vmalloc lrw videobuf2_memops gf128mul glue_helper videobuf2_v4l2 ablk_helper videobuf2_core cryptd v4l2_common snd_seq videodev brcmfmac btusb btrtl joydev snd_seq_device media brcmutil input_leds snd_timer hid_multitouch cfg80211 serio_raw snd soundcore rtsx_pci_ms memstick mei_me mei idma64 virt_dma processor_thermal_device intel_lpss_pci intel_soc_dts_iosf shpchp hci_uart btbcm btqca btintel bluetooth int3402_thermal int3403_thermal int340x_thermal_zone dell_smo8800 intel_lpss_acpi intel_lpss acpi_als int3400_thermal mac_hid acpi_thermal_rel kfifo_buf acpi_pad industrialio parport_pc ppdev lp parport autofs4 usbhid rtsx_pci_sdmmc nouveau i915_bpo mxm_wmi intel_ips ttm i2c_algo_bit drm_kms_helper syscopyarea psmouse sysfillrect sysimgblt fb_sys_fops drm nvme rtsx_pci ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint video pinctrl_intel fjes
Jun 13 03:00:02 u-XPS-15-9550 kernel: [ 143.899941] CPU: 6 PID: 959 Comm: Xorg Tainted: G W 4.4.0-24-generic #43-Ubuntu
Jun 13 03:00:02 u-XPS-15-9550 kernel: [ 143.899944] Hardware name: Dell Inc. XPS 15 9550/0N7TVV, BIOS 01.02.00 04/07/2016
Jun 13 03:00:02 u-XPS-15-9550 kernel: [ 143.899947] 0000000000000286 000000006ac654bb ffff8804a418f9a8 ffffffff813eab23
Jun 13 03:00:02 u-XPS-15-9550 kernel: [ 143.899953] ffff8804a418f9f0 ffffffffc02d4c98 ffff8804a418f9e0 ffffffff810810d2
Jun 13 03:00:02 u-XPS-15-9550 kernel: [ 143.899957] ffff8804a4401000 ffff8804a3b19d9c ffff8804a4400000 ffff8804a4b76378
Jun 13 03:00:02 u-XPS-15-9550 kernel: [ 143.899962] Call Trace:
Jun 13 03:00:02 u-XPS-15-9550 kernel: [ 143.899972] [<ffffffff813eab23>] dump_stack+0x63/0x90
Jun 13 03:00:02 u-XPS-15-9550 kernel: [ 143.899979] [<ffffffff810810d2>] warn_slowpath_common+0x82/0xc0
Jun 13 03:00:02 u-XPS-15-9550 kernel: [ 143.899984] [<ffffffff8108116c>] warn_slowpath_fmt+0x5c/0x80
Jun 13 03:00:02 u-XPS-15-9550 kernel: [ 143.900017] [<ffffffffc020667c>] skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]
Jun 13 03:00:02 u-XPS-15-9550 kernel: [ 143.900049] [<ffffffffc0206816>] skl_update_wm+0x186/0x5f0 [i915_bpo]
Jun 13 03:00:02 u-XPS-15-9550 kernel: [ 143.900080] [<ffffffffc020a53e>] intel_update_watermarks+0x1e/0x30 [i915_bpo]
Jun 13 03:00:02 u-XPS-15-9550 kernel: [ 143.900128] [<ffffffffc0272d65>] in...

[Mikko Rytkönen (mikko-fractilegames)]

Perhaps a stupid question, but where exactly is the "fix released"?

I'm on Xubuntu 16.04 with kernel 4.4.0-31 and I still see a similar crash when disconnecting the monitor in HDMI output. Same thing happens also when I turn off the external monitor.

[Timo Aaltonen (tjaalton)]

This is properly fixed since v4.8.6, but the i915_bpo backport in xenial just needs the warning silenced as requested.

[Thadeu Lima de Souza Cascardo (cascardo)]

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-xenial' to 'verification-done-xenial'. If the problem still exists, change the tag 'verification-needed-xenial' to 'verification-failed-xenial'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Kleber Sacilotto de Souza (kleber-souza)]

Could you please test if the Xenial kernel (4.4.0-79.100) which is currently in -updates fixes the issue?

Thank you.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.4.0-79.100

---------------
linux (4.4.0-79.100) xenial; urgency=low

  * linux: 4.4.0-79.100 -proposed tracker (LP: #1691180)

  * linux-aws/linux-gke incorrectly producing and using linux-*-tools-
    common/linux-*-cloud-tools-common (LP: #1688579)
    - [Config] make linux-tools-common and linux-cloud-tools-common provide linux-
      gke versions
    - [Config] make linux-tools-common and linux-cloud-tools-common provide linux-
      aws versions
    - [Packaging] prevent linux-*-tools-common from being produced from non linux
      packages

  * CVE-2017-0605
    - tracing: Use strlcpy() instead of strcpy() in __trace_find_cmdline()

  * i915-bpo crashes on external hdmi input (LP: #1580272)
    - SAUCE: i915_bpo: Silence the warning about watermark entries not changing

  * Kernel panics on Xenial when using cgroups and strict CFS limits
    (LP: #1687512)
    - sched/fair: Initialize throttle_count for new task-groups lazily
    - sched/fair: Do not announce throttled next buddy in dequeue_task_fair()

  * bonding - mlx5 - speed changed to 0 after changing ring size (LP: #1687877)
    - bonding: allow notifications for bond_set_slave_link_state

  * Xenial update to 4.4.67 stable release (LP: #1689296)
    - timerfd: Protect the might cancel mechanism proper
    - Handle mismatched open calls
    - ASoC: intel: Fix PM and non-atomic crash in bytcr drivers
    - ALSA: ppc/awacs: shut up maybe-uninitialized warning
    - drbd: avoid redefinition of BITS_PER_PAGE
    - mtd: avoid stack overflow in MTD CFI code
    - net: tg3: avoid uninitialized variable warning
    - netlink: Allow direct reclaim for fallback allocation
    - IB/qib: rename BITS_PER_PAGE to RVT_BITS_PER_PAGE
    - IB/ehca: fix maybe-uninitialized warnings
    - ext4: require encryption feature for EXT4_IOC_SET_ENCRYPTION_POLICY
    - ext4 crypto: revalidate dentry after adding or removing the key
    - ext4 crypto: use dget_parent() in ext4_d_revalidate()
    - ext4/fscrypto: avoid RCU lookup in d_revalidate
    - nfsd4: minor NFSv2/v3 write decoding cleanup
    - nfsd: stricter decoding of write-like NFSv2/v3 ops
    - dm ioctl: prevent stack leak in dm ioctl call
    - Linux 4.4.67

  * Precision Rack failed to resume from S4 (LP: #1686061)
    - x86 / hibernate: Use hlt_play_dead() when resuming from hibernation
    - x86/boot: Split out kernel_ident_mapping_init()
    - x86/power/64: Always create temporary identity mapping correctly

  * Xenial update to 4.4.66 stable release (LP: #1688505)
    - f2fs: do more integrity verification for superblock
    - xc2028: unlock on error in xc2028_set_config()
    - ARM: OMAP2+: timer: add probe for clocksources
    - clk: sunxi: Add apb0 gates for H3
    - crypto: testmgr - fix out of bound read in __test_aead()
    - drm/amdgpu: fix array out of bounds
    - ext4: check if in-inode xattr is corrupted in ext4_expand_extra_isize_ea()
    - md:raid1: fix a dead loop when read from a WriteMostly disk
    - MIPS: Fix crash registers on non-crashing CPUs
    - net: cavium: liquidio: Avoid dma_unmap_single on uninitialized ndata
    - net_sched: close another race condition in tcf_mirre...