[REGRESSION] Linux 4.9-rc4: gfx glitches on Intel Sandybridge (was: Re: Linux 4.9-rc4)

[REGRESSION] Linux 4.9-rc4: gfx glitches on Intel Sandybridge (was: Re: Linux 4.9-rc4)

[Martin Steigerwald]

Hi.

Am Samstag, 5. November 2016, 16:46:33 CET schrieb Linus Torvalds:
> So it's once again a Saturday afternoon rather than Sunday, this time
> because I felt this rc was already big enough.

With kernel 4.9-rc4 I saw gfx corruptions like

https://martin-steigerwald.de/tmp/display-issues-with-kernel-4.9-rc4.png

in Konversation, Konsole, Akregator and other KDE/Qt related apps up to the 
point of not being able to use these applications in a meaningful way.

I first thought this might be due to upgrading Qt from 5.6.1 to 5.7.1, yet 
after rebooting into 4.8 Linux kernel as packaged in Debian I saw no gfx 
glitches like that anymore.

Anything known about this?

Machine is ThinkPad T520 with Sandybridge graphics.

Kernel compiled with Debian distro GCC 6 but using no-pie makefile patch.

Next week and weekend will be pretty busy and this is a production machine, so 
bisection or any other time-consuming work on this is out of question for me. 
I can provide additional details in case they are easy and quick enough to 
obtain.


System information (now back on 4.8 kernel):

# phoronix-test-suite system-info

Phoronix Test Suite v5.2.1
System Information

Hardware:
Processor: Intel Core i5-2520M @ 3.20GHz (4 Cores), Motherboard: LENOVO 
42433WG, Chipset: Intel 2nd Generation Core Family DRAM, Memory: 16384MB, 
Disk: 300GB INTEL SSDSA2CW30 + 480GB Crucial_CT480M50, Graphics: Intel 2nd 
Generation Core Family IGP, Audio: Conexant CX20590, Monitor: P24T-7 LED, 
Network: Intel 82579LM Gigabit Connection + Intel Centrino Advanced-N 6205

Software:
OS: Debian unstable, Kernel: 4.8.0-1-amd64 (x86_64), Desktop: KDE Frameworks 
5, Display Server: X Server 1.18.4, Display Driver: modesetting 1.18.4, 
OpenGL: 3.3 Mesa 12.0.3, Compiler: GCC 6.2.0 20161103, File-System: btrfs, 
Screen Resolution: 3840x1080


# apt-show-versions | egrep "(^libgl1-mesa-dri|^libdrm-intel1|xserver-xorg-
core)" | grep amd64
libdrm-intel1:amd64/sid 2.4.71-1 uptodate
libgl1-mesa-dri:amd64/sid 12.0.3-3 uptodate
xserver-xorg-core:amd64/sid 2:1.18.4-2 uptodate


Excerpt of glxinfo:

Extended renderer info (GLX_MESA_query_renderer):
    Vendor: Intel Open Source Technology Center (0x8086)
    Device: Mesa DRI Intel(R) Sandybridge Mobile  (0x126)
    Version: 12.0.3
    Accelerated: yes
    Video memory: 1536MB
    Unified memory: yes
    Preferred profile: core (0x1)
    Max core profile version: 3.3
    Max compat profile version: 3.0
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.0

X.org runs with modesetting driver (default was changed in Debian Sid a while 
back).

Thanks,
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

Re: [REGRESSION] Linux 4.9-rc4: gfx glitches on Intel Sandybridge (was: Re: Linux 4.9-rc4)

[Mihai Donțu]

On Sun, 06 Nov 2016 15:48:36 +0100 Martin Steigerwald wrote:
> Hi.
> 
> Am Samstag, 5. November 2016, 16:46:33 CET schrieb Linus Torvalds:
> > So it's once again a Saturday afternoon rather than Sunday, this time
> > because I felt this rc was already big enough.  
> 
> With kernel 4.9-rc4 I saw gfx corruptions like
> 
> https://martin-steigerwald.de/tmp/display-issues-with-kernel-4.9-rc4.png
> 
> in Konversation, Konsole, Akregator and other KDE/Qt related apps up to the 
> point of not being able to use these applications in a meaningful way.
> 
> I first thought this might be due to upgrading Qt from 5.6.1 to 5.7.1, yet 
> after rebooting into 4.8 Linux kernel as packaged in Debian I saw no gfx 
> glitches like that anymore.
> 
> Anything known about this?

https://bugzilla.kernel.org/show_bug.cgi?id=177701

The proposed patch appears to be:
https://patchwork.freedesktop.org/patch/116808/

Have not tested it yet.

> Machine is ThinkPad T520 with Sandybridge graphics.
> 
> Kernel compiled with Debian distro GCC 6 but using no-pie makefile patch.
> 
> Next week and weekend will be pretty busy and this is a production machine, so 
> bisection or any other time-consuming work on this is out of question for me. 
> I can provide additional details in case they are easy and quick enough to 
> obtain.
> 
> 
> System information (now back on 4.8 kernel):
> 
> # phoronix-test-suite system-info
> 
> Phoronix Test Suite v5.2.1
> System Information
> 
> Hardware:
> Processor: Intel Core i5-2520M @ 3.20GHz (4 Cores), Motherboard: LENOVO 
> 42433WG, Chipset: Intel 2nd Generation Core Family DRAM, Memory: 16384MB, 
> Disk: 300GB INTEL SSDSA2CW30 + 480GB Crucial_CT480M50, Graphics: Intel 2nd 
> Generation Core Family IGP, Audio: Conexant CX20590, Monitor: P24T-7 LED, 
> Network: Intel 82579LM Gigabit Connection + Intel Centrino Advanced-N 6205
> 
> Software:
> OS: Debian unstable, Kernel: 4.8.0-1-amd64 (x86_64), Desktop: KDE Frameworks 
> 5, Display Server: X Server 1.18.4, Display Driver: modesetting 1.18.4, 
> OpenGL: 3.3 Mesa 12.0.3, Compiler: GCC 6.2.0 20161103, File-System: btrfs, 
> Screen Resolution: 3840x1080
> 
> 
> # apt-show-versions | egrep "(^libgl1-mesa-dri|^libdrm-intel1|xserver-xorg-
> core)" | grep amd64
> libdrm-intel1:amd64/sid 2.4.71-1 uptodate
> libgl1-mesa-dri:amd64/sid 12.0.3-3 uptodate
> xserver-xorg-core:amd64/sid 2:1.18.4-2 uptodate
> 
> 
> Excerpt of glxinfo:
> 
> Extended renderer info (GLX_MESA_query_renderer):
>     Vendor: Intel Open Source Technology Center (0x8086)
>     Device: Mesa DRI Intel(R) Sandybridge Mobile  (0x126)
>     Version: 12.0.3
>     Accelerated: yes
>     Video memory: 1536MB
>     Unified memory: yes
>     Preferred profile: core (0x1)
>     Max core profile version: 3.3
>     Max compat profile version: 3.0
>     Max GLES1 profile version: 1.1
>     Max GLES[23] profile version: 3.0
> 
> X.org runs with modesetting driver (default was changed in Debian Sid a while 
> back).

-- 
Mihai Donțu
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

Re: [REGRESSION] Linux 4.9-rc4: gfx glitches on Intel Sandybridge (was: Re: Linux 4.9-rc4)

[Martin Steigerwald]

Am Sonntag, 6. November 2016, 17:25:15 CET schrieb Mihai Donțu:
> On Sun, 06 Nov 2016 15:48:36 +0100 Martin Steigerwald wrote:
> > Hi.
> > 
> > Am Samstag, 5. November 2016, 16:46:33 CET schrieb Linus Torvalds:
> > > So it's once again a Saturday afternoon rather than Sunday, this time
> > > because I felt this rc was already big enough.
> > 
> > With kernel 4.9-rc4 I saw gfx corruptions like
> > 
> > https://martin-steigerwald.de/tmp/display-issues-with-kernel-4.9-rc4.png
> > 
> > in Konversation, Konsole, Akregator and other KDE/Qt related apps up to
> > the
> > point of not being able to use these applications in a meaningful way.
> > 
> > I first thought this might be due to upgrading Qt from 5.6.1 to 5.7.1, yet
> > after rebooting into 4.8 Linux kernel as packaged in Debian I saw no gfx
> > glitches like that anymore.
> > 
> > Anything known about this?
> 
> https://bugzilla.kernel.org/show_bug.cgi?id=177701
> 
> The proposed patch appears to be:
> https://patchwork.freedesktop.org/patch/116808/
> 
> Have not tested it yet.

Thank you.

It applies cleanly. I think I get a chance to test it this week.

Thanks,
Martin

> > Machine is ThinkPad T520 with Sandybridge graphics.
> > 
> > Kernel compiled with Debian distro GCC 6 but using no-pie makefile patch.
> > 
> > Next week and weekend will be pretty busy and this is a production
> > machine, so bisection or any other time-consuming work on this is out of
> > question for me. I can provide additional details in case they are easy
> > and quick enough to obtain.
> > 
> > 
> > System information (now back on 4.8 kernel):
> > 
> > # phoronix-test-suite system-info
> > 
> > Phoronix Test Suite v5.2.1
> > System Information
> > 
> > Hardware:
> > Processor: Intel Core i5-2520M @ 3.20GHz (4 Cores), Motherboard: LENOVO
> > 42433WG, Chipset: Intel 2nd Generation Core Family DRAM, Memory: 16384MB,
> > Disk: 300GB INTEL SSDSA2CW30 + 480GB Crucial_CT480M50, Graphics: Intel 2nd
> > Generation Core Family IGP, Audio: Conexant CX20590, Monitor: P24T-7 LED,
> > Network: Intel 82579LM Gigabit Connection + Intel Centrino Advanced-N 6205
> > 
> > Software:
> > OS: Debian unstable, Kernel: 4.8.0-1-amd64 (x86_64), Desktop: KDE
> > Frameworks 5, Display Server: X Server 1.18.4, Display Driver:
> > modesetting 1.18.4, OpenGL: 3.3 Mesa 12.0.3, Compiler: GCC 6.2.0
> > 20161103, File-System: btrfs, Screen Resolution: 3840x1080
> > 
> > 
> > # apt-show-versions | egrep
> > "(^libgl1-mesa-dri|^libdrm-intel1|xserver-xorg-
> > core)" | grep amd64
> > libdrm-intel1:amd64/sid 2.4.71-1 uptodate
> > libgl1-mesa-dri:amd64/sid 12.0.3-3 uptodate
> > xserver-xorg-core:amd64/sid 2:1.18.4-2 uptodate
> > 
> > 
> > Excerpt of glxinfo:
> > 
> > Extended renderer info (GLX_MESA_query_renderer):
> >     Vendor: Intel Open Source Technology Center (0x8086)
> >     Device: Mesa DRI Intel(R) Sandybridge Mobile  (0x126)
> >     Version: 12.0.3
> >     Accelerated: yes
> >     Video memory: 1536MB
> >     Unified memory: yes
> >     Preferred profile: core (0x1)
> >     Max core profile version: 3.3
> >     Max compat profile version: 3.0
> >     Max GLES1 profile version: 1.1
> >     Max GLES[23] profile version: 3.0
> > 
> > X.org runs with modesetting driver (default was changed in Debian Sid a
> > while back).


-- 
Martin
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

Re: [REGRESSION] Linux 4.9-rc4: gfx glitches on Intel Sandybridge (was: Re: Linux 4.9-rc4)

[Martin Steigerwald]

Am Sonntag, 6. November 2016, 17:25:15 CET schrieb Mihai Donțu:
> On Sun, 06 Nov 2016 15:48:36 +0100 Martin Steigerwald wrote:
> > Hi.
> > 
> > Am Samstag, 5. November 2016, 16:46:33 CET schrieb Linus Torvalds:
> > > So it's once again a Saturday afternoon rather than Sunday, this time
> > > because I felt this rc was already big enough.
> > 
> > With kernel 4.9-rc4 I saw gfx corruptions like
> > 
> > https://martin-steigerwald.de/tmp/display-issues-with-kernel-4.9-rc4.png
> > 
> > in Konversation, Konsole, Akregator and other KDE/Qt related apps up to
> > the
> > point of not being able to use these applications in a meaningful way.
> > 
> > I first thought this might be due to upgrading Qt from 5.6.1 to 5.7.1, yet
> > after rebooting into 4.8 Linux kernel as packaged in Debian I saw no gfx
> > glitches like that anymore.
> > 
> > Anything known about this?
> 
> https://bugzilla.kernel.org/show_bug.cgi?id=177701
> 
> The proposed patch appears to be:
> https://patchwork.freedesktop.org/patch/116808/
> 
> Have not tested it yet.

This patch does not fix the issue for me. Still the same graphical glitches.

Thanks,
Martin

> > Machine is ThinkPad T520 with Sandybridge graphics.
> > 
> > Kernel compiled with Debian distro GCC 6 but using no-pie makefile patch.
> > 
> > Next week and weekend will be pretty busy and this is a production
> > machine, so bisection or any other time-consuming work on this is out of
> > question for me. I can provide additional details in case they are easy
> > and quick enough to obtain.
> > 
> > 
> > System information (now back on 4.8 kernel):
> > 
> > # phoronix-test-suite system-info
> > 
> > Phoronix Test Suite v5.2.1
> > System Information
> > 
> > Hardware:
> > Processor: Intel Core i5-2520M @ 3.20GHz (4 Cores), Motherboard: LENOVO
> > 42433WG, Chipset: Intel 2nd Generation Core Family DRAM, Memory: 16384MB,
> > Disk: 300GB INTEL SSDSA2CW30 + 480GB Crucial_CT480M50, Graphics: Intel 2nd
> > Generation Core Family IGP, Audio: Conexant CX20590, Monitor: P24T-7 LED,
> > Network: Intel 82579LM Gigabit Connection + Intel Centrino Advanced-N 6205
> > 
> > Software:
> > OS: Debian unstable, Kernel: 4.8.0-1-amd64 (x86_64), Desktop: KDE
> > Frameworks 5, Display Server: X Server 1.18.4, Display Driver:
> > modesetting 1.18.4, OpenGL: 3.3 Mesa 12.0.3, Compiler: GCC 6.2.0
> > 20161103, File-System: btrfs, Screen Resolution: 3840x1080
> > 
> > 
> > # apt-show-versions | egrep
> > "(^libgl1-mesa-dri|^libdrm-intel1|xserver-xorg-
> > core)" | grep amd64
> > libdrm-intel1:amd64/sid 2.4.71-1 uptodate
> > libgl1-mesa-dri:amd64/sid 12.0.3-3 uptodate
> > xserver-xorg-core:amd64/sid 2:1.18.4-2 uptodate
> > 
> > 
> > Excerpt of glxinfo:
> > 
> > Extended renderer info (GLX_MESA_query_renderer):
> >     Vendor: Intel Open Source Technology Center (0x8086)
> >     Device: Mesa DRI Intel(R) Sandybridge Mobile  (0x126)
> >     Version: 12.0.3
> >     Accelerated: yes
> >     Video memory: 1536MB
> >     Unified memory: yes
> >     Preferred profile: core (0x1)
> >     Max core profile version: 3.3
> >     Max compat profile version: 3.0
> >     Max GLES1 profile version: 1.1
> >     Max GLES[23] profile version: 3.0
> > 
> > X.org runs with modesetting driver (default was changed in Debian Sid a
> > while back).


-- 
Martin
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

Re: [Intel-gfx] [REGRESSION] Linux 4.9-rc4: gfx glitches on Intel Sandybridge (was: Re: Linux 4.9-rc4)

[Jani Nikula]

On Sun, 06 Nov 2016, Martin Steigerwald <martin@lichtvoll.de> wrote:
> Hi.
>
> Am Samstag, 5. November 2016, 16:46:33 CET schrieb Linus Torvalds:
>> So it's once again a Saturday afternoon rather than Sunday, this time
>> because I felt this rc was already big enough.
>
> With kernel 4.9-rc4 I saw gfx corruptions like
>
> https://martin-steigerwald.de/tmp/display-issues-with-kernel-4.9-rc4.png

Is this the same issue or a different issue from [1]? Since you mention
-rc4, was this introduced in -rc4, or earlier?

Please file a bug over at [2]. One issue per bug if this is different
from [1].

BR,
Jani.


[1] http://lkml.kernel.org/r/20161031215454.GB3473@suse.de
[2] https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel


>
> in Konversation, Konsole, Akregator and other KDE/Qt related apps up to the 
> point of not being able to use these applications in a meaningful way.
>
> I first thought this might be due to upgrading Qt from 5.6.1 to 5.7.1, yet 
> after rebooting into 4.8 Linux kernel as packaged in Debian I saw no gfx 
> glitches like that anymore.
>
> Anything known about this?
>
> Machine is ThinkPad T520 with Sandybridge graphics.
>
> Kernel compiled with Debian distro GCC 6 but using no-pie makefile patch.
>
> Next week and weekend will be pretty busy and this is a production machine, so 
> bisection or any other time-consuming work on this is out of question for me. 
> I can provide additional details in case they are easy and quick enough to 
> obtain.
>
>
> System information (now back on 4.8 kernel):
>
> # phoronix-test-suite system-info
>
> Phoronix Test Suite v5.2.1
> System Information
>
> Hardware:
> Processor: Intel Core i5-2520M @ 3.20GHz (4 Cores), Motherboard: LENOVO 
> 42433WG, Chipset: Intel 2nd Generation Core Family DRAM, Memory: 16384MB, 
> Disk: 300GB INTEL SSDSA2CW30 + 480GB Crucial_CT480M50, Graphics: Intel 2nd 
> Generation Core Family IGP, Audio: Conexant CX20590, Monitor: P24T-7 LED, 
> Network: Intel 82579LM Gigabit Connection + Intel Centrino Advanced-N 6205
>
> Software:
> OS: Debian unstable, Kernel: 4.8.0-1-amd64 (x86_64), Desktop: KDE Frameworks 
> 5, Display Server: X Server 1.18.4, Display Driver: modesetting 1.18.4, 
> OpenGL: 3.3 Mesa 12.0.3, Compiler: GCC 6.2.0 20161103, File-System: btrfs, 
> Screen Resolution: 3840x1080
>
>
> # apt-show-versions | egrep "(^libgl1-mesa-dri|^libdrm-intel1|xserver-xorg-
> core)" | grep amd64
> libdrm-intel1:amd64/sid 2.4.71-1 uptodate
> libgl1-mesa-dri:amd64/sid 12.0.3-3 uptodate
> xserver-xorg-core:amd64/sid 2:1.18.4-2 uptodate
>
>
> Excerpt of glxinfo:
>
> Extended renderer info (GLX_MESA_query_renderer):
>     Vendor: Intel Open Source Technology Center (0x8086)
>     Device: Mesa DRI Intel(R) Sandybridge Mobile  (0x126)
>     Version: 12.0.3
>     Accelerated: yes
>     Video memory: 1536MB
>     Unified memory: yes
>     Preferred profile: core (0x1)
>     Max core profile version: 3.3
>     Max compat profile version: 3.0
>     Max GLES1 profile version: 1.1
>     Max GLES[23] profile version: 3.0
>
> X.org runs with modesetting driver (default was changed in Debian Sid a while 
> back).
>
> Thanks,
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Jani Nikula, Intel Open Source Technology Center

Re: [REGRESSION] Linux 4.9-rc4: gfx glitches on Intel Sandybridge (was: Re: Linux 4.9-rc4)

[Martin Steigerwald]

Am Montag, 7. November 2016, 13:04:16 CET schrieb Jani Nikula:
> On Sun, 06 Nov 2016, Martin Steigerwald <martin@lichtvoll.de> wrote:
> > Hi.
> > 
> > Am Samstag, 5. November 2016, 16:46:33 CET schrieb Linus Torvalds:
> >> So it's once again a Saturday afternoon rather than Sunday, this time
> >> because I felt this rc was already big enough.
> > 
> > With kernel 4.9-rc4 I saw gfx corruptions like
> > 
> > https://martin-steigerwald.de/tmp/display-issues-with-kernel-4.9-rc4.png
> 
> Is this the same issue or a different issue from [1]? Since you mention
> -rc4, was this introduced in -rc4, or earlier?

Yes, the gfx corruption look similar. So I bet it is the same issue as in [1].


It is also the same kind of corruptions as shown in

[Bug 177701] warning in intel_dp_aux_transfer
https://bugzilla.kernel.org/show_bug.cgi?id=177701

Just compare

https://bugzilla.kernel.org/attachment.cgi?id=241801

with 

https://martin-steigerwald.de/tmp/display-issues-with-kernel-4.9-rc4.png


However that bug report links to

https://bugs.freedesktop.org/show_bug.cgi?id=97344

yet the patch mentioned in there does not fix the issue. So I wonder whether 
bug #97344 and bug #177701 are really the same.

> Please file a bug over at [2]. One issue per bug if this is different
> from [1].

As #177701 seem to have the same corruptions, yet I do not have any

merkaba:~#1> zgrep intel_dp_aux_transfer /var/log/kern.log*
merkaba:~#1>

Of course I can report a bug at fdo as well, but I am a bit confused whether 
it may not already have been reported. Well I hope I get a chance to report it 
there as well and you get to decide.

Thank you,
Martin

> [1] http://lkml.kernel.org/r/20161031215454.GB3473@suse.de
> [2]
> https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel
> > in Konversation, Konsole, Akregator and other KDE/Qt related apps up to
> > the
> > point of not being able to use these applications in a meaningful way.
> > 
> > I first thought this might be due to upgrading Qt from 5.6.1 to 5.7.1, yet
> > after rebooting into 4.8 Linux kernel as packaged in Debian I saw no gfx
> > glitches like that anymore.
> > 
> > Anything known about this?
> > 
> > Machine is ThinkPad T520 with Sandybridge graphics.
> > 
> > Kernel compiled with Debian distro GCC 6 but using no-pie makefile patch.
> > 
> > Next week and weekend will be pretty busy and this is a production
> > machine, so bisection or any other time-consuming work on this is out of
> > question for me. I can provide additional details in case they are easy
> > and quick enough to obtain.
> > 
> > 
> > System information (now back on 4.8 kernel):
> > 
> > # phoronix-test-suite system-info
> > 
> > Phoronix Test Suite v5.2.1
> > System Information
> > 
> > Hardware:
> > Processor: Intel Core i5-2520M @ 3.20GHz (4 Cores), Motherboard: LENOVO
> > 42433WG, Chipset: Intel 2nd Generation Core Family DRAM, Memory: 16384MB,
> > Disk: 300GB INTEL SSDSA2CW30 + 480GB Crucial_CT480M50, Graphics: Intel 2nd
> > Generation Core Family IGP, Audio: Conexant CX20590, Monitor: P24T-7 LED,
> > Network: Intel 82579LM Gigabit Connection + Intel Centrino Advanced-N 6205
> > 
> > Software:
> > OS: Debian unstable, Kernel: 4.8.0-1-amd64 (x86_64), Desktop: KDE
> > Frameworks 5, Display Server: X Server 1.18.4, Display Driver:
> > modesetting 1.18.4, OpenGL: 3.3 Mesa 12.0.3, Compiler: GCC 6.2.0
> > 20161103, File-System: btrfs, Screen Resolution: 3840x1080
> > 
> > 
> > # apt-show-versions | egrep
> > "(^libgl1-mesa-dri|^libdrm-intel1|xserver-xorg-
> > core)" | grep amd64
> > libdrm-intel1:amd64/sid 2.4.71-1 uptodate
> > libgl1-mesa-dri:amd64/sid 12.0.3-3 uptodate
> > xserver-xorg-core:amd64/sid 2:1.18.4-2 uptodate
> > 
> > 
> > Excerpt of glxinfo:
> > 
> > Extended renderer info (GLX_MESA_query_renderer):
> >     Vendor: Intel Open Source Technology Center (0x8086)
> >     Device: Mesa DRI Intel(R) Sandybridge Mobile  (0x126)
> >     Version: 12.0.3
> >     Accelerated: yes
> >     Video memory: 1536MB
> >     Unified memory: yes
> >     Preferred profile: core (0x1)
> >     Max core profile version: 3.3
> >     Max compat profile version: 3.0
> >     Max GLES1 profile version: 1.1
> >     Max GLES[23] profile version: 3.0
> > 
> > X.org runs with modesetting driver (default was changed in Debian Sid a
> > while back).
> > 
> > Thanks,
> > _______________________________________________
> > Intel-gfx mailing list
> > Intel-gfx@lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/intel-gfx


-- 
Martin
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

Re: [REGRESSION] Linux 4.9-rc4: gfx glitches on Intel Sandybridge (was: Re: Linux 4.9-rc4)

[Jani Nikula]

On Mon, 07 Nov 2016, Martin Steigerwald <martin@lichtvoll.de> wrote:
> It is also the same kind of corruptions as shown in
>
> [Bug 177701] warning in intel_dp_aux_transfer
> https://bugzilla.kernel.org/show_bug.cgi?id=177701
>
> Just compare
>
> https://bugzilla.kernel.org/attachment.cgi?id=241801
>
> with 
>
> https://martin-steigerwald.de/tmp/display-issues-with-kernel-4.9-rc4.png
>
>
> However that bug report links to
>
> https://bugs.freedesktop.org/show_bug.cgi?id=97344
>
> yet the patch mentioned in there does not fix the issue. So I wonder whether 
> bug #97344 and bug #177701 are really the same.

They are the same, it's just that #177701 conflates two issues, a
warning (tracked at fdo #973449) and a graphics corruption. The latter
appears to be https://bugs.freedesktop.org/show_bug.cgi?id=98402.

The fix has now been pushed to drm-intel-fixes branch of
http://cgit.freedesktop.org/drm-intel, which is -rc4 plus half a dozen
latest fixes. Please try that and report back.

> Of course I can report a bug at fdo as well, but I am a bit confused
> whether it may not already have been reported. Well I hope I get a
> chance to report it there as well and you get to decide.

If drm-intel-fixes doesn't fix the issue for you, please file a *new*
bug over at the freedesktop.org bugzilla.

BR,
Jani.

-- 
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Re: [REGRESSION] Linux 4.9-rc4: gfx glitches on Intel Sandybridge (was: Re: Linux 4.9-rc4)

[Martin Steigerwald]

Am Montag, 7. November 2016, 19:09:36 CET schrieb Jani Nikula:
> On Mon, 07 Nov 2016, Martin Steigerwald <martin@lichtvoll.de> wrote:
> > It is also the same kind of corruptions as shown in
> > 
> > [Bug 177701] warning in intel_dp_aux_transfer
> > https://bugzilla.kernel.org/show_bug.cgi?id=177701
> > 
> > Just compare
> > 
> > https://bugzilla.kernel.org/attachment.cgi?id=241801
> > 
> > with
> > 
> > https://martin-steigerwald.de/tmp/display-issues-with-kernel-4.9-rc4.png
> > 
> > 
> > However that bug report links to
> > 
> > https://bugs.freedesktop.org/show_bug.cgi?id=97344
> > 
> > yet the patch mentioned in there does not fix the issue. So I wonder
> > whether bug #97344 and bug #177701 are really the same.
> 
> They are the same, it's just that #177701 conflates two issues, a
> warning (tracked at fdo #973449) and a graphics corruption. The latter
> appears to be https://bugs.freedesktop.org/show_bug.cgi?id=98402.
> 
> The fix has now been pushed to drm-intel-fixes branch of
> http://cgit.freedesktop.org/drm-intel, which is -rc4 plus half a dozen
> latest fixes. Please try that and report back.

Thanks for clearing that up, Jani.

I think I get a chance to compile from drm-intel tomorrow and test it. If it 
just happens on external displays – I didn´t actually check this – I can only 
test it in the evening.
 
> > Of course I can report a bug at fdo as well, but I am a bit confused
> > whether it may not already have been reported. Well I hope I get a
> > chance to report it there as well and you get to decide.
> 
> If drm-intel-fixes doesn't fix the issue for you, please file a *new*
> bug over at the freedesktop.org bugzilla.

Will do.

Thanks,
-- 
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Re: [REGRESSION] Linux 4.9-rc4: gfx glitches on Intel Sandybridge (was: Re: Linux 4.9-rc4)

[Martin Steigerwald]

Am Montag, 7. November 2016, 19:09:36 CET schrieb Jani Nikula:
> On Mon, 07 Nov 2016, Martin Steigerwald <martin@lichtvoll.de> wrote:
> > It is also the same kind of corruptions as shown in
> > 
> > [Bug 177701] warning in intel_dp_aux_transfer
> > https://bugzilla.kernel.org/show_bug.cgi?id=177701
> > 
> > Just compare
> > 
> > https://bugzilla.kernel.org/attachment.cgi?id=241801
> > 
> > with
> > 
> > https://martin-steigerwald.de/tmp/display-issues-with-kernel-4.9-rc4.png
> > 
> > 
> > However that bug report links to
> > 
> > https://bugs.freedesktop.org/show_bug.cgi?id=97344
> > 
> > yet the patch mentioned in there does not fix the issue. So I wonder
> > whether bug #97344 and bug #177701 are really the same.
> 
> They are the same, it's just that #177701 conflates two issues, a
> warning (tracked at fdo #973449) and a graphics corruption. The latter
> appears to be https://bugs.freedesktop.org/show_bug.cgi?id=98402.
> 
> The fix has now been pushed to drm-intel-fixes branch of
> http://cgit.freedesktop.org/drm-intel, which is -rc4 plus half a dozen
> latest fixes. Please try that and report back.

For now commit 54905ab5fe7aa453610e31cec640e528aaedb2e2 of drm-intel-fixes 
branch seems to work okay. I can only test with laptop display at the moment. 
But I will test with external display this evening – in case the issue at hand 
is DisplayPort related.

I will add this information to fdo bug 98402 as well.

Thanks,
Martin

> > Of course I can report a bug at fdo as well, but I am a bit confused
> > whether it may not already have been reported. Well I hope I get a
> > chance to report it there as well and you get to decide.
> 
> If drm-intel-fixes doesn't fix the issue for you, please file a *new*
> bug over at the freedesktop.org bugzilla.
> 
> BR,
> Jani.


-- 
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Re: [Intel-gfx] [REGRESSION] Linux 4.9-rc4: gfx glitches on Intel Sandybridge (was: Re: Linux 4.9-rc4)

[Martin Steigerwald]

Am Dienstag, 8. November 2016, 16:11:31 CET schrieb Martin Steigerwald:
> Am Montag, 7. November 2016, 19:09:36 CET schrieb Jani Nikula:
> > On Mon, 07 Nov 2016, Martin Steigerwald <martin@lichtvoll.de> wrote:
> > > It is also the same kind of corruptions as shown in
> > > 
> > > [Bug 177701] warning in intel_dp_aux_transfer
> > > https://bugzilla.kernel.org/show_bug.cgi?id=177701
> > > 
> > > Just compare
> > > 
> > > https://bugzilla.kernel.org/attachment.cgi?id=241801
> > > 
> > > with
> > > 
> > > https://martin-steigerwald.de/tmp/display-issues-with-kernel-4.9-rc4.png
> > > 
> > > 
> > > However that bug report links to
> > > 
> > > https://bugs.freedesktop.org/show_bug.cgi?id=97344
> > > 
> > > yet the patch mentioned in there does not fix the issue. So I wonder
> > > whether bug #97344 and bug #177701 are really the same.
> > 
> > They are the same, it's just that #177701 conflates two issues, a
> > warning (tracked at fdo #973449) and a graphics corruption. The latter
> > appears to be https://bugs.freedesktop.org/show_bug.cgi?id=98402.
> > 
> > The fix has now been pushed to drm-intel-fixes branch of
> > http://cgit.freedesktop.org/drm-intel, which is -rc4 plus half a dozen
> > latest fixes. Please try that and report back.
> 
> For now commit 54905ab5fe7aa453610e31cec640e528aaedb2e2 of drm-intel-fixes

I ment not exactly this commit, but this is the last commit in the branch as I 
compiled the kernel.

> branch seems to work okay. I can only test with laptop display at the
> moment. But I will test with external display this evening – in case the
> issue at hand is DisplayPort related.
> 
> I will add this information to fdo bug 98402 as well.
> 
> Thanks,
> Martin
> 
> > > Of course I can report a bug at fdo as well, but I am a bit confused
> > > whether it may not already have been reported. Well I hope I get a
> > > chance to report it there as well and you get to decide.
> > 
> > If drm-intel-fixes doesn't fix the issue for you, please file a *new*
> > bug over at the freedesktop.org bugzilla.
> > 
> > BR,
> > Jani.


-- 
Martin

Re: [REGRESSION] Linux 4.9-rc4: gfx glitches on Intel Sandybridge (was: Re: Linux 4.9-rc4)

[Martin Steigerwald]

Am Dienstag, 8. November 2016, 16:17:59 CET schrieb Martin Steigerwald:
> Am Dienstag, 8. November 2016, 16:11:31 CET schrieb Martin Steigerwald:
> > Am Montag, 7. November 2016, 19:09:36 CET schrieb Jani Nikula:
> > > On Mon, 07 Nov 2016, Martin Steigerwald <martin@lichtvoll.de> wrote:
> > > > It is also the same kind of corruptions as shown in
> > > > 
> > > > [Bug 177701] warning in intel_dp_aux_transfer
> > > > https://bugzilla.kernel.org/show_bug.cgi?id=177701
> > > > 
> > > > Just compare
> > > > 
> > > > https://bugzilla.kernel.org/attachment.cgi?id=241801
> > > > 
> > > > with
> > > > 
> > > > https://martin-steigerwald.de/tmp/display-issues-with-kernel-4.9-rc4.p
> > > > ng
> > > > 
> > > > 
> > > > However that bug report links to
> > > > 
> > > > https://bugs.freedesktop.org/show_bug.cgi?id=97344
> > > > 
> > > > yet the patch mentioned in there does not fix the issue. So I wonder
> > > > whether bug #97344 and bug #177701 are really the same.
> > > 
> > > They are the same, it's just that #177701 conflates two issues, a
> > > warning (tracked at fdo #973449) and a graphics corruption. The latter
> > > appears to be https://bugs.freedesktop.org/show_bug.cgi?id=98402.
> > > 
> > > The fix has now been pushed to drm-intel-fixes branch of
> > > http://cgit.freedesktop.org/drm-intel, which is -rc4 plus half a dozen
> > > latest fixes. Please try that and report back.
> > 
> > For now commit 54905ab5fe7aa453610e31cec640e528aaedb2e2 of drm-intel-fixes
> 
> I ment not exactly this commit, but this is the last commit in the branch as
> I compiled the kernel.
> 
> > branch seems to work okay. I can only test with laptop display at the
> > moment. But I will test with external display this evening – in case the
> > issue at hand is DisplayPort related.

Also no graphics glitches with external DisplayPort connected display.

*However*, I got a soft freeze and a hard freeze (well after about a minute I 
gave up and rebooted by pressing power button long enough to forcefully switch 
off the laptop) when playing PlaneShift using drm-intel-fixes branch.

Unfortunately I have no further time to debug any of this week, but it seems 
not all fixes are there are ready for next stable kernel.

Ciao,
Martin

> > I will add this information to fdo bug 98402 as well.
> > 
> > Thanks,
> > Martin
> > 
> > > > Of course I can report a bug at fdo as well, but I am a bit confused
> > > > whether it may not already have been reported. Well I hope I get a
> > > > chance to report it there as well and you get to decide.
> > > 
> > > If drm-intel-fixes doesn't fix the issue for you, please file a *new*
> > > bug over at the freedesktop.org bugzilla.
> > > 
> > > BR,
> > > Jani.


-- 
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Re: [REGRESSION] Linux 4.9-rc4: gfx glitches on Intel Sandybridge (was: Re: Linux 4.9-rc4)

[Jani Nikula]

On Wed, 09 Nov 2016, Martin Steigerwald <martin@lichtvoll.de> wrote:
> Also no graphics glitches with external DisplayPort connected display.

Thanks for confirming this. The fix should make it to -rc5.

> *However*, I got a soft freeze and a hard freeze (well after about a
> minute I gave up and rebooted by pressing power button long enough to
> forcefully switch off the laptop) when playing PlaneShift using
> drm-intel-fixes branch.
>
> Unfortunately I have no further time to debug any of this week, but it
> seems not all fixes are there are ready for next stable kernel.

Current drm-intel-fixes is just six commits on top of -rc4, and it's
very hard for me to believe any of those would cause the symptoms you
see. I presume the problem, whatever it is, is already in -rc4.

That, of course, is not a happy thing per se, but please don't block the
current batch of fixes by making unsubstantiated claims. Please do file
a bug about that issue over at [1] so we don't hijack this thread.

Thanks,
Jani.


[1] https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel


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Re: [REGRESSION] Linux 4.9-rc4: gfx glitches on Intel Sandybridge (was: Re: Linux 4.9-rc4)

[Martin Steigerwald]

Am Mittwoch, 9. November 2016, 11:42:36 CET schrieb Jani Nikula:
> > *However*, I got a soft freeze and a hard freeze (well after about a
> > minute I gave up and rebooted by pressing power button long enough to
> > forcefully switch off the laptop) when playing PlaneShift using
> > drm-intel-fixes branch.
> > 
> > Unfortunately I have no further time to debug any of this week, but it
> > seems not all fixes are there are ready for next stable kernel.
> 
> Current drm-intel-fixes is just six commits on top of -rc4, and it's
> very hard for me to believe any of those would cause the symptoms you
> see. I presume the problem, whatever it is, is already in -rc4.
> 
> That, of course, is not a happy thing per se, but please don't block the
> current batch of fixes by making unsubstantiated claims. Please do file
> a bug about that issue over at [1] so we don't hijack this thread.

You are right. I have no comparison with 4.9-rc4 due to the graphics glitches 
I had in it.

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