I use the machine to host a Windows VM with libvirt and qemu/KVM and it freezes completely more than twice a day, no log, no ssh, no terminal. Only this error appears on the log when doing nothing, I just leave it idle to see what happened.
Same machines, config and Windows guest running on 14.04 are having no problems, but 15.04 and 15.10 are very unstable, I'm downgrading.
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WARNING: CPU: 0 PID: 1091 at /build/linux-AxjFAn/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:429 vlv_clock+0x73/0xa0 [i915]()
WARN_ON(clock->n == 0 || clock->p == 0)
Modules linked in: ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables nls_iso8859_1 ppdev snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_code
drbg ansi_cprng xts gf128mul algif_skcipher af_alg dm_crypt hid_generic usbhid i915 crct10dif_pclmul crc32_pclmul ghash_clmulni_intel cryptd i2c_algo_bit psmouse drm_kms_helper
CPU: 0 PID: 1091 Comm: kworker/0:0 Tainted: G W 4.2.0-16-generic #19-Ubuntu
Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./Q1900B-ITX, BIOS P1.70 11/04/2014
Workqueue: events console_callback
0000000000000000 000000003e966b39 ffff880035a274b8 ffffffff817e8c09
0000000000000000 ffff880035a27510 ffff880035a274f8 ffffffff8107b3c6
ffff880035a274d8 ffff880035a27650 0000000000000000 ffff880035a87bc8
Call Trace:
[<ffffffff817e8c09>] dump_stack+0x45/0x57
[<ffffffff8107b3c6>] warn_slowpath_common+0x86/0xc0
[<ffffffff8107b455>] warn_slowpath_fmt+0x55/0x70
[<ffffffffc01f2b93>] vlv_clock+0x73/0xa0 [i915]
[<ffffffffc01fb5b9>] i9xx_get_pipe_config+0x2e9/0x680 [i915]
[<ffffffffc01f7e42>] check_crtc_state+0x152/0x440 [i915]
[<ffffffffc020bd6d>] intel_modeset_check_state+0x21d/0x6d0 [i915]
[<ffffffffc020cf27>] intel_crtc_set_config+0x4c7/0x580 [i915]
[<ffffffffc00a14c6>] drm_mode_set_config_internal+0x66/0x100 [drm]
[<ffffffffc0112245>] drm_fb_helper_pan_display+0x95/0xe0 [drm_kms_helper]
[<ffffffff81442b0d>] ? soft_cursor+0x1ad/0x230
[<ffffffffc021a2fa>] intel_fbdev_pan_display+0x1a/0x60 [i915]
[<ffffffff81447a6f>] fb_pan_display+0xcf/0x160
[<ffffffff81441ba0>] bit_update_start+0x20/0x50
[<ffffffff8143ec93>] fbcon_switch+0x3b3/0x650
[<ffffffff814d253c>] redraw_screen+0x1ac/0x2a0
[<ffffffff8143dfb0>] fbcon_blank+0x120/0x360
[<ffffffff810ae699>] ? update_curr+0x119/0x150
[<ffffffff810e5318>] ? lock_timer_base.isra.22+0x58/0x80
[<ffffffff810e5531>] ? internal_add_timer+0x71/0x80
[<ffffffff810e6f23>] ? mod_timer+0x143/0x220
[<ffffffff814d39f3>] do_unblank_screen+0xd3/0x1a0
[<ffffffff814d4a3c>] poke_blanked_console+0xbc/0xc0
[<ffffffff814d4b94>] console_callback+0x154/0x180
[<ffffffff8109412a>] process_one_work+0x1aa/0x440
[<ffffffff8109440b>] worker_thread+0x4b/0x4c0
[<ffffffff810943c0>] ? process_one_work+0x440/0x440
[<ffffffff810943c0>] ? process_one_work+0x440/0x440
[<ffffffff8109a7c8>] kthread+0xd8/0xf0
[<ffffffff8109a6f0>] ? kthread_create_on_node+0x1f0/0x1f0
[<ffffffff817efe1f>] ret_from_fork+0x3f/0x70
[<ffffffff8109a6f0>] ? kthread_create_on_node+0x1f0/0x1f0
---[ end trace 28c7cfb15c613738 ]---
[drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in base.adjusted_mode.crtc_clock (expected 56250, found 0)
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ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: linux-image-4.2.0-16-generic 4.2.0-16.19
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version k4.2.0-16-generic.
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.19.1-0ubuntu4
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/hwC0D2', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
Date: Wed Oct 28 15:53:51 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-07-08 (111 days ago)
InstallationMedia: Ubuntu-Server 15.04 "Vivid Vervet" - Release amd64 (20150422)
IwConfig:
p1p1 no wireless extensions.
lo no wireless extensions.
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 04f3:0103 Elan Microelectronics Corp. ActiveJet K-2024 Multimedia Keyboard
Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/@/vmlinuz-4.2.0-16-generic.efi.signed root=UUID=fb39de06-cf03-43a0-a736-ac681cf65dcb ro rootflags=subvol=@
RelatedPackageVersions:
linux-restricted-modules-4.2.0-16-generic N/A
linux-backports-modules-4.2.0-16-generic N/A
linux-firmware 1.149
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: Upgraded to wily on 2015-10-27 (1 days ago)
dmi.bios.date: 11/04/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.70
dmi.board.name: Q1900B-ITX
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.70:bd11/04/2014:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnQ1900B-ITX:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
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