FS#14409 - [xf86-video-intel] 2.6.3-3 and kernel26 2.6.29.1-4: "Failed to set tiling" error
Attached to Project:
Arch Linux
Opened by Andrew Munkres (amunkres) - Tuesday, 21 April 2009, 08:57 GMT
Last edited by Jan de Groot (JGC) - Thursday, 11 June 2009, 22:45 GMT
Opened by Andrew Munkres (amunkres) - Tuesday, 21 April 2009, 08:57 GMT
Last edited by Jan de Groot (JGC) - Thursday, 11 June 2009, 22:45 GMT
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Details
Description:
Just now I ran "pacman -Syu" and rebooted, and now the compositing performance in X is far slower than it used to be. I tried regenerating the xorg.conf file with "X -configure", but that didn't help. So, I compared the "Xorg.0.log" file from before the upgrade to the newest "Xorg.0.log" file, and I found this difference: Old file: (**) intel(0): Tiling enabled (==) intel(0): VideoRam: 262144 KB (II) intel(0): Attempting memory allocation with tiled buffers. (II) intel(0): Tiled allocation successful. (II) intel(0): [drm] Registers = 0xfde80000 (II) intel(0): [drm] ring buffer = 0xd0000000 (II) intel(0): [drm] mapped front buffer at 0xd1000000, handle = 0xd1000000 (II) intel(0): [drm] mapped back buffer at 0xd5000000, handle = 0xd5000000 (II) intel(0): [drm] mapped depth buffer at 0xd6000000, handle = 0xd6000000 (II) intel(0): [drm] mapped classic textures at 0xd7000000, handle = 0xd7000000 (II) intel(0): [drm] Initialized kernel agp heap manager, 33554432 (II) intel(0): [dri] visual configs initialized (II) intel(0): Page Flipping disabled New file: (**) intel(0): Tiling enabled (==) intel(0): VideoRam: 262144 KB (II) intel(0): Attempting memory allocation with tiled buffers. (EE) intel(0): Failed to set tiling on front buffer: rejected by kernel (EE) intel(0): Failed to set tiling on back buffer: rejected by kernel (EE) intel(0): Failed to set tiling on depth buffer: rejected by kernel (II) intel(0): Tiled allocation successful. (II) intel(0): [drm] Registers = 0xfde80000 (II) intel(0): [drm] Initialized kernel agp heap manager, 33554432 (II) intel(0): [dri] visual configs initialized (II) intel(0): Page Flipping disabled Is this problem related to Additional info: * package version(s) kernel26 2.6.29.1-4 (version from before upgrade was 2.6.29.1-3) xf86-video-intel 2.6.3-3 (version from before upgrade was 2.4.3-1) xorg-server 1.6.1-1 (version from before upgrade was 1.5.3-5) * config and/or log files etc. See the excerpts from "Xorg.0.log" above. Here is the part of "Xorg.0.log" which says what the video chipset is: (II) intel(0): Integrated Graphics Chipset: Intel(R) 945GM (--) intel(0): Chipset: "945GM" Also see the attached new and old xorg.conf files. Steps to reproduce: With the above-listed package versions running on a system with a 945GM video chipset (that's the only chipset I've tried it with), start the X server, and look in Xorg.0.log to find the "Failed to set tiling" error messages. |
xorg.conf.old
This task depends upon
Closed by Jan de Groot (JGC)
Thursday, 11 June 2009, 22:45 GMT
Reason for closing: Fixed
Additional comments about closing: Fixed with kernel 2.6.30 from testing.
Thursday, 11 June 2009, 22:45 GMT
Reason for closing: Fixed
Additional comments about closing: Fixed with kernel 2.6.30 from testing.
(**) intel(0): Tiling enabled
(==) intel(0): VideoRam: 262144 KB
(II) intel(0): Attempting memory allocation with tiled buffers.
(II) intel(0): Tiled allocation successful.
(II) intel(0): [drm] Registers = 0xfde80000
(II) intel(0): [drm] ring buffer = 0xd0000000
(II) intel(0): [drm] mapped front buffer at 0xd1000000, handle = 0xd1000000
(II) intel(0): [drm] mapped back buffer at 0xd5000000, handle = 0xd5000000
(II) intel(0): [drm] mapped depth buffer at 0xd6000000, handle = 0xd6000000
(II) intel(0): [drm] mapped classic textures at 0xd7000000, handle = 0xd7000000
(II) intel(0): [drm] Initialized kernel agp heap manager, 33554432
(II) intel(0): [dri] visual configs initialized
(II) intel(0): Page Flipping enabled
You have three options: 1) patching the kernel module 2) disable kms 3) disable tiling.
I assume the older driver does not support kms which is why it works.
CONFIG_DRM_I915=m
# CONFIG_DRM_I915_KMS is not set
It indeed seems to be a tiling issue.
Here's the Xorg.0.log from 2.6.29.1-4 kernel:
...
(EE) intel(0): Failed to set tiling on front buffer: rejected by kernel
(EE) intel(0): Failed to set tiling on back buffer: rejected by kernel
(EE) intel(0): Failed to set tiling on depth buffer: rejected by kernel
...
(II) intel(0): 0x00800000-0x00bfffff: depth buffer (4096 kB)
(II) intel(0): 0x00c00000-0x00ffffff: back buffer (4096 kB)
(II) intel(0): 0x01000000-0x013fffff: front buffer (4096 kB)
...
//
and here's from 2.6.29.1-2 kernel:
...
(II) intel(0): 0x00800000-0x00bfffff: depth buffer (4096 kB) X tiled
(II) intel(0): 0x00c00000-0x00ffffff: back buffer (4096 kB) X tiled
(II) intel(0): 0x01000000-0x013fffff: front buffer (4096 kB) X tiled
...
//
in glxgears,
- 2.6.29.1-2 gives 1200fps and etracer runs smoothly (if I disable tiling with Option "Tiling" "false" I get very low performance in etracer and 170fps in glxgears).
- 2.6.29.1-3 or 2.6.29.1-4 gives 170fps and etracer runs at 2-3 fps.
The above numbers are with EXA, it's the same situation with UXA.
00:02.0 VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 03)
No I915 or KMS are in use here.
For the moment, I'll switch back to xf86-video-intel-legacy; there I should obtain at least 400fps.
Check this post for more information: http://bbs.archlinux.org/viewtopic.php?pid=545476#p545476
Since the kernel 2.6.29.1-3 and above (including 2.6.29.4), there are some diffs for intel related files which apperantly cause slowdown on i915 cards.