Re: [Kernel-packages] [Bug 1550779] Re: [Lenovo ThinkPad X220] *ERROR* CPU pipe A FIFO underrun - Xorg glitches
-- Forwarded message - From: 678 <678sh...@gmail.com> Date: Sat, Mar 2, 2019 at 10:11 AM Subject: Re: [Bug 1550779] Re: [Lenovo ThinkPad X220] *ERROR* CPU pipe A FIFO underrun - Xorg glitches To: Bug 1550779 <1550...@bugs.launchpad.net> On 02/03/19 12:40 AM, Tom Mittelstaedt wrote: > complement (sorry for multiple-comments): > > > $ dmesg | grep i915 > [1.439662] i915 :00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem > [1.439938] [drm] Finished loading DMC firmware i915/skl_dmc_ver1_27.bin (v1.27) > [1.443269] [drm] Initialized i915 1.6.0 20180514 for :00:02.0 on minor 0 > [1.523397] i915 :00:02.0: fb0: inteldrmfb frame buffer device > [ 15.764955] snd_hda_intel :00:1f.3: bound :00:02.0 (ops i915_audio_component_bind_ops [i915]) > [56162.413053] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [59291.355801] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [64022.043888] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [68572.684020] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [84907.749926] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [131695.137832] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [140974.062510] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [152485.446459] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [155522.518586] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [164965.550908] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [165879.406055] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [178549.854547] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [185381.350517] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [187311.834886] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [188858.938318] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [195515.961747] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [195618.444271] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [206235.029303] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [217208.530378] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [222859.639505] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [225820.223051] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [231471.431276] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [239098.879129] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [242398.343295] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [247190.079036] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [247912.015060] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [248846.631100] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > [258283.737675] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > > > Of course everything is up to date. > Yes thank for the observation 678sh...@gmail.com But may I add and hope you are talking about my system , I am using a Dell lap top purchased during 2006 with (bio date not remembered yet ,and later the bio date status changed without my knowledge, some time back). I am not a tech/ expert ,but experiment with all type linux and different flavors of ubuntu .What I know is bios not reboot automatically ,every time i open system, i have to reset bio. The system has very severe remote interference and do not have a stable status. Becasue of my driving experience (ignorant certainly), I manage some how this desktop and run things.:-) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1550779 Title: [Lenovo ThinkPad X220] *ERROR* CPU pipe A FIFO underrun - Xorg glitches Status in linux package in Ubuntu: Incomplete Bug description: Upgraded linux-image-extra-4.2.0-30-generic I see graphic glitches, looks like the graphic buffer gets screwed up - funny repetition's patterns (back in time glitches) - black screen (<1sec) - graphic errors I can influence the severity of the issue with switching windows and using certain programs, e.g. Google Maps in chrome causes this issue
Re: [Kernel-packages] [Bug 1550779] Re: [Lenovo ThinkPad X220] *ERROR* CPU pipe A FIFO underrun - Xorg glitches
Certainly there is bug position which is continuing with my machine and programe need attention.. On Sat, Mar 2, 2019 at 11:55 AM Shaju കോട്ടയം <678sh...@gmail.com> wrote: > > > -- Forwarded message - > From: 678 <678sh...@gmail.com> > Date: Sat, Mar 2, 2019 at 10:11 AM > Subject: Re: [Bug 1550779] Re: [Lenovo ThinkPad X220] *ERROR* CPU pipe A > FIFO underrun - Xorg glitches > To: Bug 1550779 <1550...@bugs.launchpad.net> > > > > On 02/03/19 12:40 AM, Tom Mittelstaedt wrote: > > complement (sorry for multiple-comments): > > > > > > $ dmesg | grep i915 > > [1.439662] i915 :00:02.0: vgaarb: changed VGA decodes: > olddecodes=io+mem,decodes=io+mem:owns=io+mem > > [1.439938] [drm] Finished loading DMC firmware > i915/skl_dmc_ver1_27.bin (v1.27) > > [1.443269] [drm] Initialized i915 1.6.0 20180514 for :00:02.0 on > minor 0 > > [1.523397] i915 :00:02.0: fb0: inteldrmfb frame buffer device > > [ 15.764955] snd_hda_intel :00:1f.3: bound :00:02.0 (ops > i915_audio_component_bind_ops [i915]) > > [56162.413053] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [59291.355801] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [64022.043888] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [68572.684020] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [84907.749926] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [131695.137832] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [140974.062510] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [152485.446459] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [155522.518586] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [164965.550908] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [165879.406055] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [178549.854547] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [185381.350517] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [187311.834886] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [188858.938318] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [195515.961747] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [195618.444271] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [206235.029303] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [217208.530378] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [222859.639505] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [225820.223051] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [231471.431276] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [239098.879129] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [242398.343295] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [247190.079036] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [247912.015060] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [248846.631100] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > [258283.737675] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* > CPU pipe A FIFO underrun > > > > > > Of course everything is up to date. > > > Yes thank for the observation > > 678sh...@gmail.com > > But may I add and hope you are talking about my system , I am using a > Dell lap top purchased during 2006 with (bio date not remembered yet > ,and later the bio date status changed without my knowledge, some time > back). I am not a tech/ expert ,but experiment with all type linux and > different flavors of ubuntu .What I know is bios not reboot > automatically ,every time i open system, i have to reset bio. The system > has very severe remote interference and do not have a stable status. &
[Kernel-packages] [Bug 1550779] Re: [i915]] *ERROR* CPU pipe A FIFO underrun - Xorg glitches
shaju@678:~$ dmesg | grep i915 [2.088602] i915 :00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem [2.103420] [drm] Initialized i915 1.6.0 20171023 for :00:02.0 on minor 0 [2.264884] i915 :00:02.0: fb0: inteldrmfb frame buffer device [10947.862266] WARNING: CPU: 1 PID: 1174 at /build/linux-hwe-O570pP/linux-hwe-4.15.0/drivers/gpu/drm/i915/intel_display.c:1247 assert_plane+0x98/0xa0 [i915] [10947.862307] nf_nat_ftp nf_nat binfmt_misc nf_conntrack_ftp nf_conntrack libcrc32c iptable_filter parport_pc ppdev ip_tables x_tables lp parport autofs4 ums_realtek hid_generic usbhid hid uas usb_storage i915 i2c_algo_bit drm_kms_helper psmouse syscopyarea sysfillrect sysimgblt fb_sys_fops wmi sky2 drm video [10947.862365] RIP: 0010:assert_plane+0x98/0xa0 [i915] [10947.862417] assert_planes_disabled.isra.96+0x4d/0x70 [i915] [10947.862453] intel_disable_pipe+0x58/0x190 [i915] [10947.862512] i9xx_crtc_disable+0x7e/0x410 [i915] [10947.862549] intel_atomic_commit_tail+0x1f4/0xd90 [i915] [10947.862585] intel_atomic_commit+0x282/0x2b0 [i915] [10947.862673] intel_fbdev_set_par+0x1a/0x70 [i915] [10947.880823] WARNING: CPU: 0 PID: 1174 at /build/linux-hwe-O570pP/linux-hwe-4.15.0/drivers/gpu/drm/i915/intel_display.c:1247 assert_plane+0x98/0xa0 [i915] [10947.880864] nf_nat_ftp nf_nat binfmt_misc nf_conntrack_ftp nf_conntrack libcrc32c iptable_filter parport_pc ppdev ip_tables x_tables lp parport autofs4 ums_realtek hid_generic usbhid hid uas usb_storage i915 i2c_algo_bit drm_kms_helper psmouse syscopyarea sysfillrect sysimgblt fb_sys_fops wmi sky2 drm video [10947.880921] RIP: 0010:assert_plane+0x98/0xa0 [i915] [10947.880973] assert_planes_disabled.isra.96+0x4d/0x70 [i915] [10947.881009] intel_enable_pipe+0x58/0x200 [i915] [10947.881045] i9xx_crtc_enable+0x373/0x480 [i915] [10947.881082] intel_update_crtc+0x47/0xa0 [i915] [10947.881117] intel_update_crtcs+0x5d/0x70 [i915] [10947.881153] intel_atomic_commit_tail+0x3ad/0xd90 [i915] [10947.881189] intel_atomic_commit+0x282/0x2b0 [i915] [10947.881288] intel_fbdev_set_par+0x1a/0x70 [i915] [10947.900888] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun [11015.563288] WARNING: CPU: 0 PID: 997 at /build/linux-hwe-O570pP/linux-hwe-4.15.0/drivers/gpu/drm/i915/intel_display.c:1247 assert_plane+0x98/0xa0 [i915] [11015.563353] nf_nat_ftp nf_nat binfmt_misc nf_conntrack_ftp nf_conntrack libcrc32c iptable_filter parport_pc ppdev ip_tables x_tables lp parport autofs4 ums_realtek hid_generic usbhid hid uas usb_storage i915 i2c_algo_bit drm_kms_helper psmouse syscopyarea sysfillrect sysimgblt fb_sys_fops wmi sky2 drm video [11015.563430] RIP: 0010:assert_plane+0x98/0xa0 [i915] [11015.563497] assert_planes_disabled.isra.96+0x4d/0x70 [i915] [11015.563542] intel_disable_pipe+0x58/0x190 [i915] [11015.563613] i9xx_crtc_disable+0x7e/0x410 [i915] [11015.563659] intel_atomic_commit_tail+0x1f4/0xd90 [i915] [11015.563704] intel_atomic_commit+0x282/0x2b0 [i915] [11015.588602] WARNING: CPU: 0 PID: 997 at /build/linux-hwe-O570pP/linux-hwe-4.15.0/drivers/gpu/drm/i915/intel_display.c:1247 assert_plane+0x98/0xa0 [i915] [11015.588684] nf_nat_ftp nf_nat binfmt_misc nf_conntrack_ftp nf_conntrack libcrc32c iptable_filter parport_pc ppdev ip_tables x_tables lp parport autofs4 ums_realtek hid_generic usbhid hid uas usb_storage i915 i2c_algo_bit drm_kms_helper psmouse syscopyarea sysfillrect sysimgblt fb_sys_fops wmi sky2 drm video [11015.588785] RIP: 0010:assert_plane+0x98/0xa0 [i915] [11015.588874] assert_planes_disabled.isra.96+0x4d/0x70 [i915] [11015.588934] intel_enable_pipe+0x58/0x200 [i915] [11015.588993] i9xx_crtc_enable+0x373/0x480 [i915] [11015.589054] intel_update_crtc+0x47/0xa0 [i915] [11015.589114] intel_update_crtcs+0x5d/0x70 [i915] [11015.589174] intel_atomic_commit_tail+0x3ad/0xd90 [i915] [11015.589234] intel_atomic_commit+0x282/0x2b0 [i915] [11015.606386] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1550779 Title: [i915]] *ERROR* CPU pipe A FIFO underrun - Xorg glitches Status in linux package in Ubuntu: Incomplete Bug description: Upgraded linux-image-extra-4.2.0-30-generic I see graphic glitches, looks like the graphic buffer gets screwed up - funny repetition's patterns (back in time glitches) - black screen (<1sec) - graphic errors I can influence the severity of the issue with switching windows and using certain programs, e.g. Google Maps in chrome causes this issue reproducibly dmesg | grep i915 [2.726864] [drm] Initialized i915 1.6.0 20150522 for :00:02.0 on minor 0 [2.792005] [drm] GMBUS [i915 gmbus dpb] timed out, falling back to bit banging on pin 5 [3.471092] i915 :00:02.0: fb0: inteldrmfb fr
[Kernel-packages] [Bug 1550779] Re: [i915]] *ERROR* CPU pipe A FIFO underrun - Xorg glitches
shaju@678:~$ dmesg | grep i915 [2.088602] i915 :00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem [2.103420] [drm] Initialized i915 1.6.0 20171023 for :00:02.0 on minor 0 [2.264884] i915 :00:02.0: fb0: inteldrmfb frame buffer device [10947.862266] WARNING: CPU: 1 PID: 1174 at /build/linux-hwe-O570pP/linux-hwe-4.15.0/drivers/gpu/drm/i915/intel_display.c:1247 assert_plane+0x98/0xa0 [i915] [10947.862307] nf_nat_ftp nf_nat binfmt_misc nf_conntrack_ftp nf_conntrack libcrc32c iptable_filter parport_pc ppdev ip_tables x_tables lp parport autofs4 ums_realtek hid_generic usbhid hid uas usb_storage i915 i2c_algo_bit drm_kms_helper psmouse syscopyarea sysfillrect sysimgblt fb_sys_fops wmi sky2 drm video [10947.862365] RIP: 0010:assert_plane+0x98/0xa0 [i915] [10947.862417] assert_planes_disabled.isra.96+0x4d/0x70 [i915] [10947.862453] intel_disable_pipe+0x58/0x190 [i915] [10947.862512] i9xx_crtc_disable+0x7e/0x410 [i915] [10947.862549] intel_atomic_commit_tail+0x1f4/0xd90 [i915] [10947.862585] intel_atomic_commit+0x282/0x2b0 [i915] [10947.862673] intel_fbdev_set_par+0x1a/0x70 [i915] [10947.880823] WARNING: CPU: 0 PID: 1174 at /build/linux-hwe-O570pP/linux-hwe-4.15.0/drivers/gpu/drm/i915/intel_display.c:1247 assert_plane+0x98/0xa0 [i915] [10947.880864] nf_nat_ftp nf_nat binfmt_misc nf_conntrack_ftp nf_conntrack libcrc32c iptable_filter parport_pc ppdev ip_tables x_tables lp parport autofs4 ums_realtek hid_generic usbhid hid uas usb_storage i915 i2c_algo_bit drm_kms_helper psmouse syscopyarea sysfillrect sysimgblt fb_sys_fops wmi sky2 drm video [10947.880921] RIP: 0010:assert_plane+0x98/0xa0 [i915] [10947.880973] assert_planes_disabled.isra.96+0x4d/0x70 [i915] [10947.881009] intel_enable_pipe+0x58/0x200 [i915] [10947.881045] i9xx_crtc_enable+0x373/0x480 [i915] [10947.881082] intel_update_crtc+0x47/0xa0 [i915] [10947.881117] intel_update_crtcs+0x5d/0x70 [i915] [10947.881153] intel_atomic_commit_tail+0x3ad/0xd90 [i915] [10947.881189] intel_atomic_commit+0x282/0x2b0 [i915] [10947.881288] intel_fbdev_set_par+0x1a/0x70 [i915] [10947.900888] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun [11015.563288] WARNING: CPU: 0 PID: 997 at /build/linux-hwe-O570pP/linux-hwe-4.15.0/drivers/gpu/drm/i915/intel_display.c:1247 assert_plane+0x98/0xa0 [i915] [11015.563353] nf_nat_ftp nf_nat binfmt_misc nf_conntrack_ftp nf_conntrack libcrc32c iptable_filter parport_pc ppdev ip_tables x_tables lp parport autofs4 ums_realtek hid_generic usbhid hid uas usb_storage i915 i2c_algo_bit drm_kms_helper psmouse syscopyarea sysfillrect sysimgblt fb_sys_fops wmi sky2 drm video [11015.563430] RIP: 0010:assert_plane+0x98/0xa0 [i915] [11015.563497] assert_planes_disabled.isra.96+0x4d/0x70 [i915] [11015.563542] intel_disable_pipe+0x58/0x190 [i915] [11015.563613] i9xx_crtc_disable+0x7e/0x410 [i915] [11015.563659] intel_atomic_commit_tail+0x1f4/0xd90 [i915] [11015.563704] intel_atomic_commit+0x282/0x2b0 [i915] [11015.588602] WARNING: CPU: 0 PID: 997 at /build/linux-hwe-O570pP/linux-hwe-4.15.0/drivers/gpu/drm/i915/intel_display.c:1247 assert_plane+0x98/0xa0 [i915] [11015.588684] nf_nat_ftp nf_nat binfmt_misc nf_conntrack_ftp nf_conntrack libcrc32c iptable_filter parport_pc ppdev ip_tables x_tables lp parport autofs4 ums_realtek hid_generic usbhid hid uas usb_storage i915 i2c_algo_bit drm_kms_helper psmouse syscopyarea sysfillrect sysimgblt fb_sys_fops wmi sky2 drm video [11015.588785] RIP: 0010:assert_plane+0x98/0xa0 [i915] [11015.588874] assert_planes_disabled.isra.96+0x4d/0x70 [i915] [11015.588934] intel_enable_pipe+0x58/0x200 [i915] [11015.588993] i9xx_crtc_enable+0x373/0x480 [i915] [11015.589054] intel_update_crtc+0x47/0xa0 [i915] [11015.589114] intel_update_crtcs+0x5d/0x70 [i915] [11015.589174] intel_atomic_commit_tail+0x3ad/0xd90 [i915] [11015.589234] intel_atomic_commit+0x282/0x2b0 [i915] [11015.606386] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun ** Attachment added: "shaju personal.ods" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1550779/+attachment/5224082/+files/shaju%20personal.ods -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1550779 Title: [i915]] *ERROR* CPU pipe A FIFO underrun - Xorg glitches Status in linux package in Ubuntu: Incomplete Bug description: Upgraded linux-image-extra-4.2.0-30-generic I see graphic glitches, looks like the graphic buffer gets screwed up - funny repetition's patterns (back in time glitches) - black screen (<1sec) - graphic errors I can influence the severity of the issue with switching windows and using certain programs, e.g. Google Maps in chrome causes this issue reproducibly dmesg | grep i915 [2.726864] [drm] Initialized i915 1.6.0 20150522 for :00:02.
