After update to version 2.99.917-1~exp1ubuntu2.1, there is often problem while using KWin effects. System hangs up for few seconds, KWin effects get restarted and there is this message in dmesg:
[ 156.916691] ------------[ cut here ]------------
[ 156.916733] WARNING: CPU: 1 PID: 51 at /build/buildd/linux-3.19.0/drivers/gpu/drm/i915/intel_display.c:9564 intel_mmio_flip_work_func+0x17f/0x190 [i915]()
[ 156.916735] WARN_ON(__i915_wait_seqno(ring, seqno, intel_crtc->reset_counter, false, NULL, NULL) != 0)
[ 156.916736] Modules linked in:
[ 156.916738] xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables snd_hda_codec_conexant snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel intel_rapl iosf_mbi x86_pkg_temp_thermal wl(POE) snd_hda_controller snd_hda_codec rtsx_usb_ms uvcvideo intel_powerclamp memstick coretemp videobuf2_vmalloc snd_hwdep videobuf2_memops videobuf2_core snd_pcm v4l2_common snd_seq_midi kvm crct10dif_pclmul crc32_pclmul videodev snd_seq_midi_event ghash_clmulni_intel media aesni_intel snd_rawmidi aes_x86_64 snd_seq lrw snd_seq_device snd_timer gf128mul snd cfg80211 glue_helper soundcore joydev ablk_helper serio_raw cryptd lpc_ich shpchp mei_me parport_pc ppdev ie31200_edac
[ 156.916770] mei edac_core lp parport mac_hid rfcomm bnep bluetooth binfmt_misc nls_iso8859_1 rtsx_usb_sdmmc rtsx_usb hid_generic usbhid hid amdkfd amd_iommu_v2 radeon ahci psmouse libahci alx mdio i915 ttm i2c_algo_bit video drm_kms_helper drm
[ 156.916785] CPU: 1 PID: 51 Comm: kworker/1:1 Tainted: P IOE 3.19.0-16-generic #16-Ubuntu
[ 156.916787] Hardware name: LENOVO 20238/INVALID, BIOS 79CN33WW(V1.15) 08/12/2013
[ 156.916804] Workqueue: events intel_mmio_flip_work_func [i915]
[ 156.916806] ffffffffc02aae10 ffff88008f423cf8 ffffffff817c2235 0000000000000007
[ 156.916809] ffff88008f423d48 ffff88008f423d38 ffffffff8107595a ffff8801df254200
[ 156.916812] ffff8801d742eb30 ffff8801d742eb30 ffff8801d742e000 ffff8801df258300
[ 156.916815] Call Trace:
[ 156.916823] [<ffffffff817c2235>] dump_stack+0x45/0x57
[ 156.916827] [<ffffffff8107595a>] warn_slowpath_common+0x8a/0xc0
[ 156.916829] [<ffffffff810759d6>] warn_slowpath_fmt+0x46/0x50
[ 156.916835] [<ffffffff810138df>] ? __switch_to+0x44f/0x5e0
[ 156.916853] [<ffffffffc02432bf>] intel_mmio_flip_work_func+0x17f/0x190 [i915]
[ 156.916856] [<ffffffff8108eb78>] process_one_work+0x158/0x430
[ 156.916859] [<ffffffff8108f6bb>] worker_thread+0x5b/0x530
[ 156.916862] [<ffffffff8108f660>] ? rescuer_thread+0x3a0/0x3a0
[ 156.916864] [<ffffffff81094759>] kthread+0xc9/0xe0
[ 156.916867] [<ffffffff81094690>] ? kthread_create_on_node+0x1c0/0x1c0
[ 156.916871] [<ffffffff817c9298>] ret_from_fork+0x58/0x90
[ 156.916874] [<ffffffff81094690>] ? kthread_create_on_node+0x1c0/0x1c0
[ 156.916876] ---[ end trace ff4f72459f629413 ]---
[ 156.923769] drm/i915: Resetting chip after gpu hang
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2.1
ProcVersionSignature: Ubuntu 3.19.0-16.16-generic 3.19.3
Uname: Linux 3.19.0-16-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CurrentDesktop: KDE
Date: Thu May 14 08:19:38 2015
InstallationDate: Installed on 2013-11-16 (543 days ago)
InstallationMedia: Kubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
SourcePackage: xserver-xorg-video-intel
UpgradeStatus: Upgraded to vivid on 2015-04-25 (18 days ago)
Peter Lopen, thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command, as it will automatically gather debugging information, in a terminal:
apport-collect -p xorg 1454964
Please ensure you have the package xdiagnose installed, and that you click the Yes button for attaching additional debugging information.
When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https:/