** Changed in: linux (Ubuntu)
Assignee: Connor Kuehl (connork) => (unassigned)
** Changed in: linux (Ubuntu Bionic)
Assignee: Connor Kuehl (connork) => (unassigned)
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** Tags added: cscc
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https://bugs.launchpad.net/bugs/1791321
Title:
No video on laptop display after suspend/resume
To manage notifications about this bug go to:
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Connor Kuehl (connork)
** Changed in: linux (Ubuntu Bionic)
Assignee: (unassigned) => Connor Kuehl (connork)
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** Changed in: linux (Ubuntu Bionic)
Status: In Progress => Confirmed
** Changed in: linux (Ubuntu)
Status: In Progress => Confirmed
** Changed in: linux (Ubuntu Bionic)
Assignee: Joseph Salisbury (jsalisbury) => (unassigned)
** Changed in: linux (Ubuntu)
Assignee:
v4.19-rc4 works, v4.18.8 still has the bug.
** Tags added: kernel-fixed-upstream
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https://bugs.launchpad.net/bugs/1791321
Title:
No video on laptop display after suspend/resume
To
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.19 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix
I'll ping upstream for feedback if v4.19-rc4 still exhibits the bug.
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https://bugs.launchpad.net/bugs/1791321
Title:
No video on laptop display after suspend/resume
To manage
Yes, the test kernel you uploaded works fine. Thanks.
I wish I understood more of what was behind that bad commit and the
previous ones it referenced, since there appears to have been a series
of fixes/reversions already, with each one apparently causing new
problems on some other system:
I built a test kernel with a revert of commit
3cd091a773936c54344a519f7ee1379ccb620bee. The test kernel can be downloaded
from:
http://kernel.ubuntu.com/~jsalisbury/lp1791321
Can you test this kernel and see if it resolves this bug?
Note about installing test kernels:
• If the test kernel is
Forwarded to https://bugzilla.kernel.org/show_bug.cgi?id=201091.
** Bug watch added: Linux Kernel Bug Tracker #201091
https://bugzilla.kernel.org/show_bug.cgi?id=201091
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** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
** Changed in: linux (Ubuntu)
Status: Incomplete => Triaged
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Changed
3cd091a773936c54344a519f7ee1379ccb620bee is the first bad commit
commit 3cd091a773936c54344a519f7ee1379ccb620bee
Author: Rafael J. Wysocki
Date: Fri Feb 9 22:55:28 2018 +0100
ACPI / EC: Restore polling during noirq suspend/resume phases
Commit 662591461c4b (ACPI / EC: Drop EC
apport information
** Tags added: apport-collected bionic
** Description changed:
Between linux 4.15.0-23 and 4.15.0-24, suspend/resume stopped working
correctly. After resume, the laptop panel remains blank with -24
(external monitors resume correctly). Suspend/resume worked correctly
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