| 2012-03-14 13:39:36 |
Marco Trevisan (Treviño) |
bug |
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added bug |
| 2012-03-14 13:40:13 |
Marco Trevisan (Treviño) |
bug watch added |
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http://bugzilla.kernel.org/show_bug.cgi?id=15845 |
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| 2012-03-14 13:40:13 |
Marco Trevisan (Treviño) |
bug task added |
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linux |
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| 2012-03-14 13:40:32 |
Marco Trevisan (Treviño) |
bug task added |
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pm-utils (Ubuntu) |
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| 2012-03-14 14:01:37 |
Marco Trevisan (Treviño) |
bug |
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added subscriber Canonical Kernel Team |
| 2012-03-14 14:01:44 |
Marco Trevisan (Treviño) |
bug |
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added subscriber Canonical X.org |
| 2012-03-14 14:51:01 |
Bug Watch Updater |
linux: status |
Unknown |
Confirmed |
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| 2012-03-14 14:51:01 |
Bug Watch Updater |
linux: importance |
Unknown |
Medium |
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| 2012-03-15 14:17:19 |
Martin Pitt |
bug |
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added subscriber Martin Pitt |
| 2012-03-21 07:08:17 |
Rick Spencer |
linux (Ubuntu): importance |
Undecided |
Medium |
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| 2012-03-21 07:08:20 |
Rick Spencer |
pm-utils (Ubuntu): importance |
Undecided |
Medium |
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| 2012-05-11 11:33:36 |
Launchpad Janitor |
linux (Ubuntu): status |
New |
Confirmed |
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| 2012-05-11 11:33:36 |
Launchpad Janitor |
pm-utils (Ubuntu): status |
New |
Confirmed |
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| 2012-05-11 11:33:55 |
Florian Stoll |
bug |
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added subscriber Schmankerl |
| 2012-08-21 09:53:51 |
Peter Wu |
bug |
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added subscriber Lekensteyn |
| 2012-10-17 23:06:51 |
Bryce Harrington |
removed subscriber Canonical X.org |
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| 2012-11-13 01:55:44 |
Marco Trevisan (Treviño) |
description |
Using vgaswitcheroo to disable the integrate or discrete card could lead to some troubles when resuming from suspension (to RAM or disk as well). Basically, the computer monitor backlight could be not be turned on again on suspension.
To me it happens this:
- I disable the integrated card
- Suspend
- Resume: no monitor backlight is on
At this point doing what mentioned below fix the issue, but it must be done by SSH or by memory :):
echo DIGD > /sys/kernel/debug/vgaswitcheroo/switch
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
So, the easiest and clean fix should be to add a sleep.d script something like:
#!/bin/sh
if [ -e /sys/kernel/debug/vgaswitcheroo/switch ]; then
case "$1" in
hibernate|suspend)
echo ON > /sys/kernel/debug/vgaswitcheroo/switch
;;
thaw|resume)
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
;;
esac
fi
This would fix the issue for vgaswitcheroo users and won't touch the others. |
Using vgaswitcheroo to disable the integrate or discrete card could lead to some troubles when resuming from suspension (to RAM or disk as well). Basically, the computer monitor backlight could be not be turned on again when resuming from suspension.
To me it happens this:
- I disable the integrated card
- Suspend
- Resume: no monitor backlight is on
At this point doing what mentioned below fix the issue, but it must be done by SSH or by memory :):
echo DIGD > /sys/kernel/debug/vgaswitcheroo/switch
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
So, the easiest and clean fix should be to add a sleep.d script something like:
#!/bin/sh
if [ -e /sys/kernel/debug/vgaswitcheroo/switch ]; then
case "$1" in
hibernate|suspend)
echo ON > /sys/kernel/debug/vgaswitcheroo/switch
;;
thaw|resume)
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
;;
esac
fi
This would fix the issue for vgaswitcheroo users and won't touch the others. |
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| 2013-09-02 01:50:22 |
penalvch |
tags |
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needs-kernel-logs needs-upstream-testing |
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| 2013-09-02 01:50:50 |
penalvch |
linux (Ubuntu): status |
Confirmed |
Incomplete |
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| 2014-12-05 15:31:15 |
penalvch |
bug task deleted |
pm-utils (Ubuntu) |
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