Graphical Issues on Skylake with 14.2

lazardo · 04-25-2016, 09:38 AM

From -rc5 diffs: https://git.kernel.org/cgit/linux/ke...=v4.6-rc4&dt=2

Code:

-rw-r--r--	drivers/gpu/drm/radeon/si_dpm.c	1	
-rw-r--r--	drivers/gpu/drm/i915/intel_lrc.c	16	
-rw-r--r--	drivers/gpu/drm/i915/intel_pm.c	42	
-rw-r--r--	drivers/gpu/drm/i915/intel_ringbuffer.c	18	
-rw-r--r--	drivers/gpu/drm/i915/intel_uncore.c	6	
-rw-r--r--	drivers/gpu/drm/nouveau/nouveau_connector.c	4	
-rw-r--r--	drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c	2	
-rw-r--r--	drivers/gpu/drm/radeon/radeon_atpx_handler.c	11	
-rw-r--r--	drivers/gpu/drm/radeon/radeon_connectors.c	7	
-rw-r--r--	drivers/gpu/drm/radeon/radeon_device.c	14	
-rw-r--r--	drivers/gpu/drm/radeon/radeon_ttm.c	2	
-rw-r--r--	drivers/gpu/drm/radeon/si_dpm.c	1

ReaperX7 · 04-25-2016, 10:57 AM

Quote:

Originally Posted by atelszewski

Hi,

@archfan What do you have in xorg.conf?

Mine looks like that:

Code:

$ cat /etc/X11/xorg.conf
Section "Device"
  Identifier  "card0"
  Driver      "intel"
  Option      "DRI"       "3"
  Option      "TearFree"  "true"
  Option      "VSync"     "false"
EndSection

and that's what I have in the log:

Code:

$ grep DRI /var/log/Xorg.0.log
[     8.373] (**) intel(0): Option "DRI" "3"
[     8.378] (II) intel(0): [DRI2] Setup complete
[     8.378] (II) intel(0): [DRI2]   DRI driver: i965
[     8.378] (II) intel(0): [DRI2]   VDPAU driver: va_gl
[     8.378] (II) intel(0): direct rendering: DRI2 DRI3 enabled
[     8.410] (II) GLX: Initialized DRI2 GL provider for screen 0

I'm not sure if DRI3 is working for me or not, though.

--
Best regards,
Andrzej Telszewski

It's saying DRI 3 is enabled, but it's looks to be defaulting to DRI 2. Are you using

Code:

Option "AccelMethod" "sna"

acceleration or "uxa"? If you don't have an option selected, it might be defaulting to uxa.

atelszewski · 04-25-2016, 11:03 AM

Hi,

Quote:

Originally Posted by ReaperX7

It's saying DRI 3 is enabled, but it's looks to be defaulting to DRI 2. Are you using

Code:

Option "AccelMethod" "sna"

acceleration or "uxa"? If you don't have an option selected, it might be defaulting to uxa.

With the current -current, SNA is enabled by default, without explicitly setting it in xorg.conf:

Code:

$ grep -i sna /var/log/Xorg.0.log
[     8.377] (II) intel(0): SNA initialized with Broadwell (gen8) backend

But if I recall correctly, even when setting AccelMethod to SNA explicitly in xorg.conf, my log looked similar.

--
Best regards,
Andrzej Telszewski

atelszewski · 04-25-2016, 01:14 PM

Hi,

Per this message, it looks like to test if DRI3 is enabled, you need to run:

Code:

$ LC_ALL=C LIBGL_DEBUG=verbose glxinfo >/dev/null
libGL: Can't open configuration file /home/antezu/.drirc: No such file or directory.
libGL: pci id for fd 4: 8086:1616, driver i965
libGL: OpenDriver: trying /usr/lib64/xorg/modules/dri/tls/i965_dri.so
libGL: OpenDriver: trying /usr/lib64/xorg/modules/dri/i965_dri.so
libGL: Can't open configuration file /home/antezu/.drirc: No such file or directory.
libGL: Using DRI3 for screen 0
libGL: Can't open configuration file /home/antezu/.drirc: No such file or directory.
libGL: Can't open configuration file /home/antezu/.drirc: No such file or directory.
libGL: Can't open configuration file /home/antezu/.drirc: No such file or directory.

Looks like I have DRI3 enabled.

--
Best regards,
Andrzej Telszewski

atelszewski · 04-28-2016, 09:23 AM

Hi,

Aren't you Skylake folks affected by this?

--
Best regards,
Andrzej Telszewski

ReaperX7 · 04-28-2016, 01:08 PM

We do still have 2.4.67 also.

Maybe only those exact models are effected?

kjhambrick · 04-28-2016, 01:19 PM

Quote:

Originally Posted by atelszewski

Hi,

Aren't you Skylake folks affected by this?

Andrzej Telszewski

Sorry All, I hit Submit before I realized it ...

Next Post is complete.

Good catch Andrzej !

Sure sounds like it.

Thanks.

-- kjh

kjhambrick · 04-28-2016, 01:21 PM

Quote:

Originally Posted by atelszewski

Hi,

Aren't you Skylake folks affected by this?

--
Best regards,
Andrzej Telszewski

Good catch Andrzej !

Sure sounds like it.

These are my libdrm files on Current + Multilib

Code:

# ver libdrm
  -rw-r--r-- 1 root root 2899 Mar 12 14:00 /var/log/packages/libdrm-2.4.67-x86_64-1
  -rw-r--r-- 1 root root 1261 Mar 12 14:14 /var/log/packages/libdrm-compat32-2.4.67-x86_64-1compat32

Thanks !

-- kjh

atelszewski · 04-28-2016, 01:58 PM

Hi,

Quote:

Originally Posted by ReaperX7

We do still have 2.4.67 also.

Yep, 2.4.68 was released today.

--
Best regards,
Andrzej Telszewski

D1ver · 04-28-2016, 04:40 PM

Quote:

Originally Posted by atelszewski

Hi,

Aren't you Skylake folks affected by this?

--
Best regards,
Andrzej Telszewski

Wow that's a good bug..

ReaperX7 · 04-28-2016, 05:22 PM

The latest driver Patrick released in a package removed the glamor fallback so Skylake shouldn't get DRI through the DDX driver until 2.4.68 is added.

It might get support through modesetting and glamoregl, but if libdrm doesn't have support it might only get support through llvmpipe. That means no i965(Tungsten) or ilo(Gallium) acceleration in Mesa.

atelszewski · 04-30-2016, 09:41 AM

Hi,

I am now testing version git_20160430_e4ef6e9 of the driver.

--
Best regards,
Andrzej Telszewski

Nille_kungen · 04-30-2016, 12:43 PM

Did the new libdrm-2.4.68 in current help?

atelszewski · 04-30-2016, 12:49 PM

H,

Quote:

Originally Posted by Nille_kungen

Did the new libdrm-2.4.68 in current help?

Just for the record, I'm on Broadwell, so I'm not affected by this.
Skylake users, raise your voice

--
Best record,
Andrzej Telszewski

D1ver · 04-30-2016, 05:04 PM

How do I test whether the libdrm change fixed the problem?