[Bug 56661] Framebuffer on boot causes brightness to go to minimum on HP laptop

bugzilla-daemon at bugzilla.kernel.org bugzilla-daemon at bugzilla.kernel.org
Tue Apr 16 12:30:33 PDT 2013


https://bugzilla.kernel.org/show_bug.cgi?id=56661





--- Comment #2 from Dan Dart <dandart at googlemail.com>  2013-04-16 19:30:33 ---
dmesg content:
https://gist.github.com/dandart/5398812

The actual resetting appears to be on line 711 with:
[    9.867926] [drm:intel_panel_actually_set_backlight], set backlight PWM = 0

after two tries to get the i2c dp_aux_ch status (707-710):

[    9.865314] [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x5143003f
[    9.865321] [drm:intel_dp_i2c_aux_ch], aux_ch failed -110
[    9.867860] [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x5143003f
[    9.867866] [drm:intel_dp_i2c_aux_ch], aux_ch failed -110

Is this sufficient to take a stab at the cause?
Cheers
Dan

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