subject:"\[Intel\-gfx\] \[v4.6\-10530\-g28165ec7a99b\] i915\: \*ERROR\* \"CPU pipe\/PCH transcoder\" A FIFO underrun"

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

2017-02-02 Thread Sedat Dilek

On Fri, May 27, 2016 at 10:19 AM, Chris Bainbridge
 wrote:
> On 25 May 2016 at 08:31, Sedat Dilek  wrote:
>> Hi Daniel,
>>
>> with latest Linus Git I see this with my Intel SandyBridge GPU...
>>
>> [   17.629014] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
>> *ERROR* CPU pipe A FIFO underrun
>> [   17.630652] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
>> *ERROR* uncleared pch fifo underrun on pch transcoder A
>> [   17.630685] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
>> *ERROR* PCH transcoder A FIFO underrun
>
> Guessing this is https://bugs.freedesktop.org/show_bug.cgi?id=95736

Hi Matt, Hi Daniel,

can you look at fdo #95736, please?

I still see this on all my Linux-kernels up to Linus upstream of today.

Thanks.

Regards,
- Sedat -

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

2017-02-02 Thread Sedat Dilek

On Fri, May 27, 2016 at 10:19 AM, Chris Bainbridge
 wrote:
> On 25 May 2016 at 08:31, Sedat Dilek  wrote:
>> Hi Daniel,
>>
>> with latest Linus Git I see this with my Intel SandyBridge GPU...
>>
>> [   17.629014] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
>> *ERROR* CPU pipe A FIFO underrun
>> [   17.630652] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
>> *ERROR* uncleared pch fifo underrun on pch transcoder A
>> [   17.630685] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
>> *ERROR* PCH transcoder A FIFO underrun
>
> Guessing this is https://bugs.freedesktop.org/show_bug.cgi?id=95736

Hi Matt, Hi Daniel,

can you look at fdo #95736, please?

I still see this on all my Linux-kernels up to Linus upstream of today.

Thanks.

Regards,
- Sedat -

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

2016-05-30 Thread Sedat Dilek

On 5/28/16, Sedat Dilek  wrote:
> On 5/27/16, Chris Bainbridge  wrote:
>> On 25 May 2016 at 08:31, Sedat Dilek  wrote:
>>> Hi Daniel,
>>>
>>> with latest Linus Git I see this with my Intel SandyBridge GPU...
>>>
>>> [   17.629014] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
>>> *ERROR* CPU pipe A FIFO underrun
>>> [   17.630652] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
>>> *ERROR* uncleared pch fifo underrun on pch transcoder A
>>> [   17.630685] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
>>> *ERROR* PCH transcoder A FIFO underrun
>>
>> Guessing this is https://bugs.freedesktop.org/show_bug.cgi?id=95736
>>
>
> I did some last testing (for this weekend) with drm-intel-nightly
> (2016y-05m-27d-12h-32m-45s UTC) on top of Linux v4.6 final.
>
> This did not help as I see the same *ERROR* outputs.
>

With drm-intel-nightly (2016y-05m-30d-17h-51m-33s-UTC) the outputs
look a bit different and more helpful?

[   19.139790] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
*ERROR* CPU pipe A FIFO underrun
[   19.140274] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
*ERROR* uncleared pch fifo underrun on pch transcoder A
[   19.140299] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
*ERROR* PCH transcoder A FIFO underrun

- Sedat -

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

2016-05-30 Thread Sedat Dilek

On 5/28/16, Sedat Dilek  wrote:
> On 5/27/16, Chris Bainbridge  wrote:
>> On 25 May 2016 at 08:31, Sedat Dilek  wrote:
>>> Hi Daniel,
>>>
>>> with latest Linus Git I see this with my Intel SandyBridge GPU...
>>>
>>> [   17.629014] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
>>> *ERROR* CPU pipe A FIFO underrun
>>> [   17.630652] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
>>> *ERROR* uncleared pch fifo underrun on pch transcoder A
>>> [   17.630685] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
>>> *ERROR* PCH transcoder A FIFO underrun
>>
>> Guessing this is https://bugs.freedesktop.org/show_bug.cgi?id=95736
>>
>
> I did some last testing (for this weekend) with drm-intel-nightly
> (2016y-05m-27d-12h-32m-45s UTC) on top of Linux v4.6 final.
>
> This did not help as I see the same *ERROR* outputs.
>

With drm-intel-nightly (2016y-05m-30d-17h-51m-33s-UTC) the outputs
look a bit different and more helpful?

[   19.139790] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
*ERROR* CPU pipe A FIFO underrun
[   19.140274] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
*ERROR* uncleared pch fifo underrun on pch transcoder A
[   19.140299] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
*ERROR* PCH transcoder A FIFO underrun

- Sedat -

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

2016-05-28 Thread Sedat Dilek

On 5/27/16, Chris Bainbridge  wrote:
> On 25 May 2016 at 08:31, Sedat Dilek  wrote:
>> Hi Daniel,
>>
>> with latest Linus Git I see this with my Intel SandyBridge GPU...
>>
>> [   17.629014] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
>> *ERROR* CPU pipe A FIFO underrun
>> [   17.630652] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
>> *ERROR* uncleared pch fifo underrun on pch transcoder A
>> [   17.630685] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
>> *ERROR* PCH transcoder A FIFO underrun
>
> Guessing this is https://bugs.freedesktop.org/show_bug.cgi?id=95736
>

Thanks for the hint!

Did you try with reverting this "first bad" commit mentionned in your
BR (or a "series of commits")?

- Sedat -

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

2016-05-28 Thread Sedat Dilek

On 5/27/16, Chris Bainbridge  wrote:
> On 25 May 2016 at 08:31, Sedat Dilek  wrote:
>> Hi Daniel,
>>
>> with latest Linus Git I see this with my Intel SandyBridge GPU...
>>
>> [   17.629014] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
>> *ERROR* CPU pipe A FIFO underrun
>> [   17.630652] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
>> *ERROR* uncleared pch fifo underrun on pch transcoder A
>> [   17.630685] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
>> *ERROR* PCH transcoder A FIFO underrun
>
> Guessing this is https://bugs.freedesktop.org/show_bug.cgi?id=95736
>

Thanks for the hint!

Did you try with reverting this "first bad" commit mentionned in your
BR (or a "series of commits")?

- Sedat -

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

2016-05-27 Thread Chris Bainbridge

On 25 May 2016 at 08:31, Sedat Dilek  wrote:
> Hi Daniel,
>
> with latest Linus Git I see this with my Intel SandyBridge GPU...
>
> [   17.629014] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
> *ERROR* CPU pipe A FIFO underrun
> [   17.630652] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
> *ERROR* uncleared pch fifo underrun on pch transcoder A
> [   17.630685] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
> *ERROR* PCH transcoder A FIFO underrun

Guessing this is https://bugs.freedesktop.org/show_bug.cgi?id=95736

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

2016-05-27 Thread Chris Bainbridge

On 25 May 2016 at 08:31, Sedat Dilek  wrote:
> Hi Daniel,
>
> with latest Linus Git I see this with my Intel SandyBridge GPU...
>
> [   17.629014] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
> *ERROR* CPU pipe A FIFO underrun
> [   17.630652] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
> *ERROR* uncleared pch fifo underrun on pch transcoder A
> [   17.630685] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
> *ERROR* PCH transcoder A FIFO underrun

Guessing this is https://bugs.freedesktop.org/show_bug.cgi?id=95736

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

2016-05-25 Thread Sedat Dilek

On 5/25/16, Jani Nikula  wrote:
> On Wed, 25 May 2016, Sedat Dilek  wrote:
>> Hi Daniel,
>>
>> with latest Linus Git I see this with my Intel SandyBridge GPU...
>>
>> [   17.629014] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
>> *ERROR* CPU pipe A FIFO underrun
>> [   17.630652] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
>> *ERROR* uncleared pch fifo underrun on pch transcoder A
>> [   17.630685] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
>> *ERROR* PCH transcoder A FIFO underrun
>>
>> Attached are my linux-config, dmesg-output anx Xorg-log.
>>
>> Any other informations you need?
>
> For starters, please try the fixes pull I just sent on top [1]. There's
> a couple of watermark fixes.
>
> BR,
> Jani.
>
>
>
> [1] http://mid.gmane.org/87zirebjm7@intel.com
>
>
>
> --
> Jani Nikula, Intel Open Source Technology Center
>

I pulled in drm-intel.git#tags/drm-intel-next-fixes-2016-05-25 on top
of above mentionned latest Linus Git and the problem still remains!

$ dmesg | egrep i915 | grep -i error
[   19.583713] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
*ERROR* CPU pipe A FIFO underrun
[   19.586363] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
*ERROR* uncleared pch fifo underrun on pch transcoder A
[   19.586399] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
*ERROR* PCH transcoder A FIFO underrun

I have attached my dmesg-output only, the linux-config I had sent earlier.

- Sedat -
[0.00] Linux version 4.6.0-10530.2-iniza-small 
(sedat.di...@gmail.com@fambox) (gcc version 4.9.2 (Ubuntu 4.9.2-0ubuntu1~12.04) 
) #1 SMP Thu May 26 07:20:40 CEST 2016
[0.00] Command line: BOOT_IMAGE=/boot/vmlinuz-4.6.0-10530.2-iniza-small 
root=UUID=001AADA61AAD9964 loop=/ubuntu/disks/root.disk ro intel_pstate=disable
[0.00] KERNEL supported cpus:
[0.00]   Intel GenuineIntel
[0.00]   AMD AuthenticAMD
[0.00]   Centaur CentaurHauls
[0.00] Disabled fast string operations
[0.00] x86/fpu: xstate_offset[2]:  576, xstate_sizes[2]:  256
[0.00] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point 
registers'
[0.00] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[0.00] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
[0.00] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, 
using 'standard' format.
[0.00] x86/fpu: Using 'eager' FPU context switches.
[0.00] e820: BIOS-provided physical RAM map:
[0.00] BIOS-e820: [mem 0x-0x0009d7ff] usable
[0.00] BIOS-e820: [mem 0x0009d800-0x0009] reserved
[0.00] BIOS-e820: [mem 0x000e-0x000f] reserved
[0.00] BIOS-e820: [mem 0x0010-0x1fff] usable
[0.00] BIOS-e820: [mem 0x2000-0x201f] reserved
[0.00] BIOS-e820: [mem 0x2020-0x3fff] usable
[0.00] BIOS-e820: [mem 0x4000-0x401f] reserved
[0.00] BIOS-e820: [mem 0x4020-0xd9c9efff] usable
[0.00] BIOS-e820: [mem 0xd9c9f000-0xdae7efff] reserved
[0.00] BIOS-e820: [mem 0xdae7f000-0xdaf9efff] ACPI NVS
[0.00] BIOS-e820: [mem 0xdaf9f000-0xdaffefff] ACPI data
[0.00] BIOS-e820: [mem 0xdafff000-0xdaff] usable
[0.00] BIOS-e820: [mem 0xdb00-0xdf9f] reserved
[0.00] BIOS-e820: [mem 0xf800-0xfbff] reserved
[0.00] BIOS-e820: [mem 0xfec0-0xfec00fff] reserved
[0.00] BIOS-e820: [mem 0xfed08000-0xfed08fff] reserved
[0.00] BIOS-e820: [mem 0xfed1-0xfed19fff] reserved
[0.00] BIOS-e820: [mem 0xfed1c000-0xfed1] reserved
[0.00] BIOS-e820: [mem 0xfee0-0xfee00fff] reserved
[0.00] BIOS-e820: [mem 0xffd8-0x] reserved
[0.00] BIOS-e820: [mem 0x0001-0x00011fdf] usable
[0.00] NX (Execute Disable) protection: active
[0.00] SMBIOS 2.6 present.
[0.00] DMI: SAMSUNG ELECTRONICS CO., LTD. 
530U3BI/530U4BI/530U4BH/530U3BI/530U4BI/530U4BH, BIOS 13XK 03/28/2013
[0.00] e820: update [mem 0x-0x0fff] usable ==> reserved
[0.00] e820: remove [mem 0x000a-0x000f] usable
[0.00] e820: last_pfn = 0x11fe00 max_arch_pfn = 0x4
[0.00] MTRR default type: uncachable
[0.00] MTRR fixed ranges enabled:
[0.00]   0-9 write-back
[0.00]   A-B uncachable
[0.00]   C-F write-protect
[0.00] MTRR variable ranges enabled:
[0.00]   0 base 0 mask F8000 write-back
[0.00]   1 base 08000 mask FC000 write-back
[0.00]

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

2016-05-25 Thread Sedat Dilek

On 5/25/16, Jani Nikula  wrote:
> On Wed, 25 May 2016, Sedat Dilek  wrote:
>> Hi Daniel,
>>
>> with latest Linus Git I see this with my Intel SandyBridge GPU...
>>
>> [   17.629014] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
>> *ERROR* CPU pipe A FIFO underrun
>> [   17.630652] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
>> *ERROR* uncleared pch fifo underrun on pch transcoder A
>> [   17.630685] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
>> *ERROR* PCH transcoder A FIFO underrun
>>
>> Attached are my linux-config, dmesg-output anx Xorg-log.
>>
>> Any other informations you need?
>
> For starters, please try the fixes pull I just sent on top [1]. There's
> a couple of watermark fixes.
>
> BR,
> Jani.
>
>
>
> [1] http://mid.gmane.org/87zirebjm7@intel.com
>
>
>
> --
> Jani Nikula, Intel Open Source Technology Center
>

I pulled in drm-intel.git#tags/drm-intel-next-fixes-2016-05-25 on top
of above mentionned latest Linus Git and the problem still remains!

$ dmesg | egrep i915 | grep -i error
[   19.583713] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
*ERROR* CPU pipe A FIFO underrun
[   19.586363] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
*ERROR* uncleared pch fifo underrun on pch transcoder A
[   19.586399] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
*ERROR* PCH transcoder A FIFO underrun

I have attached my dmesg-output only, the linux-config I had sent earlier.

- Sedat -
[0.00] Linux version 4.6.0-10530.2-iniza-small 
(sedat.di...@gmail.com@fambox) (gcc version 4.9.2 (Ubuntu 4.9.2-0ubuntu1~12.04) 
) #1 SMP Thu May 26 07:20:40 CEST 2016
[0.00] Command line: BOOT_IMAGE=/boot/vmlinuz-4.6.0-10530.2-iniza-small 
root=UUID=001AADA61AAD9964 loop=/ubuntu/disks/root.disk ro intel_pstate=disable
[0.00] KERNEL supported cpus:
[0.00]   Intel GenuineIntel
[0.00]   AMD AuthenticAMD
[0.00]   Centaur CentaurHauls
[0.00] Disabled fast string operations
[0.00] x86/fpu: xstate_offset[2]:  576, xstate_sizes[2]:  256
[0.00] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point 
registers'
[0.00] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[0.00] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
[0.00] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, 
using 'standard' format.
[0.00] x86/fpu: Using 'eager' FPU context switches.
[0.00] e820: BIOS-provided physical RAM map:
[0.00] BIOS-e820: [mem 0x-0x0009d7ff] usable
[0.00] BIOS-e820: [mem 0x0009d800-0x0009] reserved
[0.00] BIOS-e820: [mem 0x000e-0x000f] reserved
[0.00] BIOS-e820: [mem 0x0010-0x1fff] usable
[0.00] BIOS-e820: [mem 0x2000-0x201f] reserved
[0.00] BIOS-e820: [mem 0x2020-0x3fff] usable
[0.00] BIOS-e820: [mem 0x4000-0x401f] reserved
[0.00] BIOS-e820: [mem 0x4020-0xd9c9efff] usable
[0.00] BIOS-e820: [mem 0xd9c9f000-0xdae7efff] reserved
[0.00] BIOS-e820: [mem 0xdae7f000-0xdaf9efff] ACPI NVS
[0.00] BIOS-e820: [mem 0xdaf9f000-0xdaffefff] ACPI data
[0.00] BIOS-e820: [mem 0xdafff000-0xdaff] usable
[0.00] BIOS-e820: [mem 0xdb00-0xdf9f] reserved
[0.00] BIOS-e820: [mem 0xf800-0xfbff] reserved
[0.00] BIOS-e820: [mem 0xfec0-0xfec00fff] reserved
[0.00] BIOS-e820: [mem 0xfed08000-0xfed08fff] reserved
[0.00] BIOS-e820: [mem 0xfed1-0xfed19fff] reserved
[0.00] BIOS-e820: [mem 0xfed1c000-0xfed1] reserved
[0.00] BIOS-e820: [mem 0xfee0-0xfee00fff] reserved
[0.00] BIOS-e820: [mem 0xffd8-0x] reserved
[0.00] BIOS-e820: [mem 0x0001-0x00011fdf] usable
[0.00] NX (Execute Disable) protection: active
[0.00] SMBIOS 2.6 present.
[0.00] DMI: SAMSUNG ELECTRONICS CO., LTD. 
530U3BI/530U4BI/530U4BH/530U3BI/530U4BI/530U4BH, BIOS 13XK 03/28/2013
[0.00] e820: update [mem 0x-0x0fff] usable ==> reserved
[0.00] e820: remove [mem 0x000a-0x000f] usable
[0.00] e820: last_pfn = 0x11fe00 max_arch_pfn = 0x4
[0.00] MTRR default type: uncachable
[0.00] MTRR fixed ranges enabled:
[0.00]   0-9 write-back
[0.00]   A-B uncachable
[0.00]   C-F write-protect
[0.00] MTRR variable ranges enabled:
[0.00]   0 base 0 mask F8000 write-back
[0.00]   1 base 08000 mask FC000 write-back
[0.00]   2 base 0C000 mask FE000 write-back
[

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

2016-05-25 Thread Jani Nikula

On Wed, 25 May 2016, Sedat Dilek  wrote:
> Hi Daniel,
>
> with latest Linus Git I see this with my Intel SandyBridge GPU...
>
> [   17.629014] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
> *ERROR* CPU pipe A FIFO underrun
> [   17.630652] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
> *ERROR* uncleared pch fifo underrun on pch transcoder A
> [   17.630685] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
> *ERROR* PCH transcoder A FIFO underrun
>
> Attached are my linux-config, dmesg-output anx Xorg-log.
>
> Any other informations you need?

For starters, please try the fixes pull I just sent on top [1]. There's
a couple of watermark fixes.

BR,
Jani.



[1] http://mid.gmane.org/87zirebjm7@intel.com



-- 
Jani Nikula, Intel Open Source Technology Center

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

2016-05-25 Thread Jani Nikula

On Wed, 25 May 2016, Sedat Dilek  wrote:
> Hi Daniel,
>
> with latest Linus Git I see this with my Intel SandyBridge GPU...
>
> [   17.629014] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
> *ERROR* CPU pipe A FIFO underrun
> [   17.630652] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
> *ERROR* uncleared pch fifo underrun on pch transcoder A
> [   17.630685] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
> *ERROR* PCH transcoder A FIFO underrun
>
> Attached are my linux-config, dmesg-output anx Xorg-log.
>
> Any other informations you need?

For starters, please try the fixes pull I just sent on top [1]. There's
a couple of watermark fixes.

BR,
Jani.



[1] http://mid.gmane.org/87zirebjm7@intel.com



-- 
Jani Nikula, Intel Open Source Technology Center

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: ERROR "CPU pipe/PCH transcoder" A FIFO underrun

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