From: Krzysztof Mazur <krzysiek@podlesie.net>
To: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: Re: i915: black screen after blank when LID is closed on Linux >= 3.1
Date: Thu, 22 Nov 2012 22:35:22 +0100 [thread overview]
Message-ID: <20121122213522.GA12958@shrek.podlesie.net> (raw)
In-Reply-To: <CAKMK7uGBSwBeW=hCJi1sZgahQQSKdSy8K=i+M53hF3vDuNzDDQ@mail.gmail.com>
On Thu, Nov 22, 2012 at 09:17:54PM +0100, Daniel Vetter wrote:
> Hi,
>
>
> Since a dpms ioctl call tends to follow a modeset, this likely only
> results in that dpms call enabling the hw again. Can you please add
> drm.debug=0xe to your kernel cmdline and boot into a 3.6 with this
> hack applied, reproduce the issue and the attach the complete dmesg?
>
> The below WARNs from 3.7 support that, we've simply improved the
> code's ability to detect such problems. Can you please boot into a
> kernel with the latest drm-intel-next-queued branch merged in, but no
> other patches applied. Again please append drm.debug=0xe and then
> attach the complete dmesg after you've reproduced the issue.
>
> Please also compile your kernels with CONFIG_PRINTK_TIME=y, the
> timestamps in dmesg help a lot in figuring things out.
In lastest drm-intel-next-queued (v3.7-rc4-323-g9352dce) I got
following compile error:
/home/krzysiek/src/linux-2.6/drivers/gpu/drm/i915/intel_lvds.c: In function 'intel_lvds_init':
/home/krzysiek/src/linux-2.6/drivers/gpu/drm/i915/intel_lvds.c:1098:34: error: 'mode' undeclared (first use in this function)
/home/krzysiek/src/linux-2.6/drivers/gpu/drm/i915/intel_lvds.c:1098:34: note: each undeclared identifier is reported only once for each function it appears in
Without thinking I fixed it by:
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index ced06f3..43f0874 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -1095,7 +1095,7 @@ bool intel_lvds_init(struct drm_device *dev)
fixed_mode = intel_crtc_mode_get(dev, crtc);
if (fixed_mode) {
DRM_DEBUG_KMS("using current (BIOS) mode: ");
- drm_mode_debug_printmodeline(&mode);
+ drm_mode_debug_printmodeline(fixed_mode);
fixed_mode->type |= DRM_MODE_TYPE_PREFERRED;
goto out;
}
Thanks,
Krzysiek
next prev parent reply other threads:[~2012-11-22 21:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-22 18:54 i915: black screen after blank when LID is closed on Linux >= 3.1 Krzysztof Mazur
2012-11-22 20:17 ` Daniel Vetter
2012-11-22 21:11 ` Krzysztof Mazur
2012-11-22 21:35 ` Krzysztof Mazur [this message]
2012-11-22 21:39 ` Daniel Vetter
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