[Bug 91451] New: Apple miniDP-to-VGA adapter doesn't work anymore since Kernel 4.1
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Fri Jul 24 05:46:43 PDT 2015
https://bugs.freedesktop.org/show_bug.cgi?id=91451
Bug ID: 91451
Summary: Apple miniDP-to-VGA adapter doesn't work anymore since
Kernel 4.1
Product: DRI
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: DRM/Intel
Assignee: intel-gfx-bugs at lists.freedesktop.org
Reporter: AlwaysCarryABible at googlemail.com
QA Contact: intel-gfx-bugs at lists.freedesktop.org
CC: intel-gfx-bugs at lists.freedesktop.org
Created attachment 117341
--> https://bugs.freedesktop.org/attachment.cgi?id=117341&action=edit
dmesg woutput
Since Kernel 4.1 the Apple miniDP-to-VGA adapter stopped working. If I revert
the following commit the dongle works again:
1d002fa720738bcd0bddb9178e9ea0773288e1dd is the first bad commit
commit 1d002fa720738bcd0bddb9178e9ea0773288e1dd
Author: Simon Farnsworth <simon.farnsworth at onelan.co.uk>
Date: Tue Feb 10 18:38:08 2015 +0000
drm/dp: Use large transactions for I2C over AUX
I was able to reproduce this bug with the nightly build:
Linux note 4.2.0-1-drm-intel-nightly #1 SMP PREEMPT Fri Jul 24 13:19:36 CEST
2015 x86_64 GNU/Linux
Apparently there are more user affected by this bug:
https://bbs.archlinux.org/viewtopic.php?id=199540
miniDP-to-DVI/HDMI still seems to be working (but I can't test that)
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