Hope this can land in Vivid. Not using thread irqs certainly works this bug around, but then playing audio on bluetooth is at best flaky !
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1430230 Title: Log flooding with warning message when using linux-lowlatency kernel Status in One Hundred Papercuts: Confirmed Status in X.org xf86-video-intel: Fix Released Status in linux-meta-lowlatency package in Ubuntu: New Status in xserver-xorg-video-intel package in Ubuntu: Confirmed Bug description: In Vivid, when booting with lowlatency kernel (and possibly with generic kernel and threadirqs), Intel graphics driver will flood the logs with warning: Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247652] ------------[ cut here ]------------ Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247683] WARNING: CPU: 3 PID: 659 at /build/buildd/linux-3.19.0/drivers/gpu/drm/i915/intel_display.c:9705 intel_check_page_flip+0xa2/0xf0 [i915]() Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247685] WARN_ON(!in_irq()) Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247686] Modules linked in: md4 nls_utf8 cifs fscache msr acpi_call(OE) xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 bridge stp llc ebtable_filter ebtables pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) binfmt_misc rfcomm bnep nls_iso8859_1 hid_apple intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel uvcvideo kvm videobuf2_vmalloc videobuf2_memops crct10dif_pclmul i915 videobuf2_core crc32_pclmul ghash_clmulni_intel v4l2_common videodev aesni_intel media aes_x86_64 btusb lrw gf128mul glue_helper bluetooth ablk_helper cryptd arc4 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iwldvm dm_multipath scsi_dh snd_hda_intel mac80211 snd_hda_controller snd_hda_codec joydev snd_hwdep serio_raw drm_kms_helper iwlwifi snd_pcm thinkpad_acpi cfg80211 snd_seq_midi snd_seq_midi_event nvram snd_rawmidi snd_seq ip6t_REJECT nf_reject_ipv6 snd_seq_de vice nf_log_ipv6 lpc_ich snd_timer drm shpchp xt_hl snd mei_me nf_conntrack_ipv6 mei nf_defrag_ipv6 i2c_algo_bit ip6t_rt soundcore wmi video mac_hid ipt_REJECT nf_reject_ipv4 nf_log_ipv4 nf_log_common xt_LOG xt_multiport xt_limit xt_tcpudp nf_conntrack_ipv4 nf_defrag_ipv4 xt_addrtype xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast cuse nf_nat_ftp nf_nat nf_conntrack_ftp parport_pc nf_conntrack ppdev iptable_filter ip_tables lp x_tables parport autofs4 btrfs xor raid6_pq hid_generic usbhid hid psmouse ahci e1000e sdhci_pci libahci sdhci ptp pps_core Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247768] CPU: 3 PID: 659 Comm: irq/32-i915 Tainted: G W OE 3.19.0-7-lowlatency #7-Ubuntu Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247770] Hardware name: LENOVO 2353CTO/2353CTO, BIOS G7ETA0WW (2.60 ) 05/14/2014 Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247781] ffffffffc0be7010 ffff88042a353c98 ffffffff817c5402 ffff88043e2cfd78 Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247784] ffff88042a353ce8 ffff88042a353cd8 ffffffff8107738a ffff88042a353cd8 Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247786] ffff880428f3f000 ffff880428f5e800 0000000000000000 0000000000000000 Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247788] Call Trace: Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247795] [<ffffffff817c5402>] dump_stack+0x4c/0x6e Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247805] [<ffffffff8107738a>] warn_slowpath_common+0x8a/0xc0 Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247814] [<ffffffff81077406>] warn_slowpath_fmt+0x46/0x50 Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247830] [<ffffffffc0b92482>] intel_check_page_flip+0xa2/0xf0 [i915] Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247843] [<ffffffffc0b5f4d8>] ironlake_irq_handler+0x428/0x1010 [i915] Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247847] [<ffffffff8109b55d>] ? finish_task_switch+0x5d/0x100 Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247854] [<ffffffff810cfc60>] ? irq_thread_fn+0x50/0x50 Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247858] [<ffffffff810cfc8d>] irq_forced_thread_fn+0x2d/0x70 Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247861] [<ffffffff810d01af>] irq_thread+0x11f/0x150 Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247865] [<ffffffff810cfd00>] ? wake_threads_waitq+0x30/0x30 Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247868] [<ffffffff810d0090>] ? irq_thread_check_affinity+0x90/0x90 Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247871] [<ffffffff81095bc9>] kthread+0xc9/0xe0 Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247874] [<ffffffff81095b00>] ? kthread_create_on_node+0x1c0/0x1c0 Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247877] [<ffffffff817cc33c>] ret_from_fork+0x7c/0xb0 Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247880] [<ffffffff81095b00>] ? kthread_create_on_node+0x1c0/0x1c0 Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247883] ---[ end trace fa4376848cde145f ]--- There seems to be a bug report here https://bugs.freedesktop.org/show_bug.cgi?id=89321 ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2 ProcVersionSignature: Ubuntu 3.19.0-7.7-generic 3.19.0 Uname: Linux 3.19.0-7-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.16.2-0ubuntu2 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Tue Mar 10 10:46:28 2015 DistUpgraded: 2015-03-09 18:17:36,430 DEBUG enabling apt cron job DistroCodename: vivid DistroVariant: ubuntu DkmsStatus: acpi-call, 1.1.0, 3.19.0-7-generic, x86_64: installed virtualbox, 4.3.24, 3.19.0-7-generic, x86_64: installed ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:21fb] InstallationDate: Installed on 2014-12-13 (86 days ago) InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) MachineType: LENOVO 2353CTO ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-7-generic.efi.signed root=/dev/mapper/ubuntu--vg-lv--root ro quiet splash nomdmonddf nomdmonisw vt.handoff=7 SourcePackage: xserver-xorg-video-intel UpgradeStatus: Upgraded to vivid on 2015-03-09 (0 days ago) dmi.bios.date: 05/14/2014 dmi.bios.vendor: LENOVO dmi.bios.version: G7ETA0WW (2.60 ) dmi.board.asset.tag: Not Available dmi.board.name: 2353CTO dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrG7ETA0WW(2.60):bd05/14/2014:svnLENOVO:pn2353CTO:pvrThinkPadT430s:rvnLENOVO:rn2353CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 2353CTO dmi.product.version: ThinkPad T430s dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.12.1+15.04.20150303-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.59-0ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.0-0ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.0-0ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.16.2.901-1ubuntu4 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2 xserver.bootTime: Tue Mar 10 10:09:26 2015 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 12876 vendor SEC xserver.version: 2:1.16.2.901-1ubuntu4 To manage notifications about this bug go to: https://bugs.launchpad.net/hundredpapercuts/+bug/1430230/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
