FS#40065 - Backlight not working after display sleep on Thinkpad T61
Attached to Project:
Arch Linux
Opened by Vasili (3point2) - Thursday, 24 April 2014, 10:52 GMT
Last edited by Dave Reisner (falconindy) - Thursday, 24 April 2014, 14:06 GMT
Opened by Vasili (3point2) - Thursday, 24 April 2014, 10:52 GMT
Last edited by Dave Reisner (falconindy) - Thursday, 24 April 2014, 14:06 GMT
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Details
Since updating to linux 3.14.1-1 from 3.13.8-1, the
backlight on my Thinkpad T61 laptop does not get turned on
again after the display is put to sleep. The easiest way to
cause this is to close the lid and then open it again (I
have disabled putting the system to sleep with the lid
switch). It also happens if my power saving settings put the
display to sleep.
Doing a VT switch (alt-ctrl-F1 to a console and then alt-ctrl-F2 where my X server lives) makes the backlight work again. There doesn't seem to be anything relevant in my logs. I tried the /etc/X11/xorg.conf/20-intel.conf workaround from the wiki with no success. I have not tried any of the kernel parameters yet, but for now I'm happy sticking with my downgraded kernel. This seems to be related to bug #39798 |
This task depends upon
Closed by Dave Reisner (falconindy)
Thursday, 24 April 2014, 14:06 GMT
Reason for closing: Duplicate
Additional comments about closing: FS#39798
Thursday, 24 April 2014, 14:06 GMT
Reason for closing: Duplicate
Additional comments about closing: