On 04/09/2013 06:40 PM, Daniel Vetter wrote:
Can you please quickly test whether the below patch changes anything
in the behaviour?
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 8809813..974ae32 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4715,7 +4715,7 @@ static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
i9xx_set_pipeconf(intel_crtc);
- intel_enable_pipe(dev_priv, pipe, false);
+ //intel_enable_pipe(dev_priv, pipe, false);
intel_wait_for_vblank(dev, pipe);
for some reason the diff did not work. Here a snippet of my modified
intel_display.c:
...
/* pipesrc and dspsize control the size that is scaled from,
* which should always be the user's requested size.
*/
I915_WRITE(DSPSIZE(plane),
((mode->vdisplay - 1) << 16) |
(mode->hdisplay - 1));
I915_WRITE(DSPPOS(plane), 0);
I915_WRITE(PIPECONF(pipe), pipeconf);
POSTING_READ(PIPECONF(pipe));
//intel_enable_pipe(dev_priv, pipe, false);
intel_wait_for_vblank(dev, pipe);
I915_WRITE(DSPCNTR(plane), dspcntr);
POSTING_READ(DSPCNTR(plane));
...
The screen still does not scale.
By the way, I have had this problem before:
https://bugzilla.kernel.org/show_bug.cgi?id=43071
--
Hans
On Mon, Apr 8, 2013 at 7:38 PM, Hans de Bruin <jmdebr...@xmsnet.nl> wrote:
On 04/07/2013 08:56 PM, Daniel Vetter wrote:
On Sun, Mar 10, 2013 at 06:02:32PM +0100, Hans de Bruin wrote:
On 03/06/2013 11:37 PM, Daniel Vetter wrote:
On Wed, Mar 6, 2013 at 7:39 PM, Hans de Bruin <jmdebr...@xmsnet.nl>
wrote:
On 03/06/2013 03:00 PM, Daniel Vetter wrote:
Hi Hans,
Can you please test with 3.9-rc1? That contains an additional patch
which might prevent the regression. Specifically
commit 9d6d9f19e8146fa24903cb561e204a22232740e3
Author: Mika Kuoppala <mika.kuopp...@linux.intel.com>
Date: Fri Feb 8 16:35:38 2013 +0200
drm/i915: clean up panel fitter handling in lvds
Today's kernel still contains the bug.
Hm, I've just retested latest drm-intel-nightly which should have the
same set of relevant patches, and I couldn't reproduce your issue.
Low-res modes on the lvds panel seem to correctly scale up here on my
945gm.
Can you pls retest with latest -nightly from
http://cgit.freedesktop.org/~danvet/drm-intel ?
Also please attach the output of xrandr --verbose when running with a
reduced mode.
tested:
http://cgit.freedesktop.org/~danvet/drm-intel
commit d08a6eb2690b1ac6f0582feb41c2ccbea945285f
Date: Thu Mar 7 22:54:25 2013 +0100
The problem is still there
my previous post contained the xrandr output whiteout the verbose.
Doe you want my to repost with the verbose option?
Sorry for the long delay in taking again a look at this. I've tried to
reproduce this on my various machines similar to yours, but totally
failed. Also, a bunch of people with matching machines to yours actually
claim that the 2 commits which regress for you actually fix up lvds panel
fiting for them. So I'm a bit lost as to what's going on here.
Can you please try the below debug patch on top of latest 3.9-rc kernels?
Please boot that kernel with drm.debug=0xe added to your kernel cmdline,
reproduce the issue (preferrably with xrandr --output LVDS --mode ...) and
then attach the complete dmesg. This will enable lots of debugging, so
please make sure you grab everything starting from when i915.ko loads.
ok, here is de dmesg.
--
Hans
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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