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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - LVDS blank screen on GM45"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94825#c25">Comment # 25</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - LVDS blank screen on GM45"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94825">bug 94825</a>
from <span class="vcard"><a class="email" href="mailto:rob@solution-space.com" title="Rob Kramer <rob@solution-space.com>"> <span class="fn">Rob Kramer</span></a>
</span></b>
<pre>Ah, I just noticed there is still this issue:
[drm:intel_enable_lvds [i915]] *ERROR* timed out waiting for panel to power
on
This occurs every time I restart X, which perhaps does a mode switch to the
same mode? The panel seems to work fine though..
When there is a mode switch (or X is started), a relay clicks in this display
setup. I'm not sure why or what that's for, or if that could introduce an
external delay that the driver doesn't expect.
if (wait_for((I915_READ(stat_reg) & PP_ON) != 0, 1000))
DRM_ERROR("timed out waiting for panel to power on\n");
Is there a way to see if the panel is detected as switched on after a longer
period of time (some seconds)? In /sys, debugfs, or with intel-gpu-tools?</pre>
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