Verified fixed:
Precise 3.2.0-55.85
** Changed in: linux (Ubuntu Precise)
Status: New => Fix Released
** Changed in: linux (Ubuntu Precise)
Assignee: (unassigned) => Kamal Mostafa (kamalmostafa)
** Tags removed: verification-needed-precise
** Tags added: verification-done-precise
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** Also affects: linux (Ubuntu Precise)
Importance: Undecided
Status: New
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Title:
backlight not adjustable after screen turns off and t
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
precise' to 'verification-done-precise'.
If verification is not done by 5 working days from
Re-verified:
Quantal 3.5.0-40.62
Raring 3.8.0-30.44
** Tags removed: verification-needed-quantal verification-needed-raring
** Tags added: verification-done-quantal verification-done-raring
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This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed'
to 'verification-done'.
If verification is not done by one week from today, this fix will b
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed'
to 'verification-done'.
If verification is not done by one week from today, this fix will b
@Marco, actually this existing bug matches the problem: LP: #1169376.
We'll track the problem there.
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Title:
backlight not adjustable after scre
@Marco, thanks for reporting this. Could I ask you to file a new
Launchpad bug against linux 3.8.0-18 for this, so that we can capture
the hardware profile for that XPS13 model? Please assign the new bug to
me.
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With 3.8.0-18 kernel, brightness control is not working on my XPS13 with
raring. Blacklight is on but at minimum, brightness keys do nothin.
Blacklight is perfectly working with kernel 3.8.0-17 and maybe before: on
waking from suspend, brightness is restored as before suspending and is
adjustabl
** Changed in: dell-sputnik
Status: Fix Committed => Fix Released
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Title:
backlight not adjustable after screen turns off and then back on
This bug was fixed in the package linux - 3.8.0-18.28
---
linux (3.8.0-18.28) raring; urgency=low
[ Andy Whitcroft ]
* (debian) fix internal linkage for separated header packages
- LP: #1165259
[ Gavin Guo ]
* SAUCE: Bluetooth: Add support for Broadcom 413c:8143
- L
Thanks for the confirmation, Kent.
This problem is fixed (for the old and new Dell XPS 13 models) in the
next Raring kernel (3.8.0-18.28), which is available now in raring-
proposed (see https://wiki.ubuntu.com/Testing/EnableProposed ).
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Tested the kernel in raring-proposed today and things are much better.
After letting the screen turn off and then back on I no longer lose the
ability to adjust screen brightness. I can still adjust screen
brightness after suspend / resume, too. This is on an L322X.
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** Changed in: dell-sputnik
Status: New => Fix Committed
** Changed in: dell-sputnik
Importance: Undecided => Medium
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Title:
backlight
** Changed in: linux (Ubuntu)
Status: In Progress => Fix Committed
** Also affects: linux (Ubuntu Raring)
Importance: Medium
Assignee: Kamal Mostafa (kamalmostafa)
Status: Fix Committed
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** Changed in: linux (Ubuntu)
Status: Triaged => In Progress
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Title:
backlight not adjustable after screen turns off and then back on
To
@jsalisbury, I think I know the code that's causing the trouble, and
will look into the issue here; no bisect is necessary.
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Title:
backlight not
If the bug still exists in 3.9-rc5, we can perform a bisect to identify
the commit that introduced this regression.
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Title:
backlight not adjusta
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Kamal Mostafa (kamalmostafa)
** Changed in: dell-sputnik
Assignee: (unassigned) => Kamal Mostafa (kamalmostafa)
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https://
It would be great if you could test rc5[0] and post the results.
Thanks in advance!
[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9-rc5-raring/
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Yes, Ubuntu 12.04 does not have this issue.
Actually, I see that 3.9-rc5 was released yesterday, and it contains this
change:
Revert "drm/i915: write backlight harder"
http://permalink.gmane.org/gmane.linux.kernel.commits.head/372554
Right now, someone else is using the L322X I was testing with
Also, was there a prior kernel version that did not exhibit this bug?
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Title:
backlight not adjustable after screen turns off and then back on
T
This issue appears to be an upstream bug, since you tested the latest
upstream kernel. Would it be possible for you to open an upstream bug
report[0]? That will allow the upstream Developers to examine the
issue, and may provide a quicker resolution to the bug.
Please follow the instructions on
** Description changed:
- On both versions of the XPS 13 (L322X and L321X) running Ubuntu Raring with
the latest 3.8 kernel, letting the screen turn off and then back on causes the
backlight to go to maximum brightness and become not adjustable. This behavior
is not seen with suspend/resume or
I've tested with the latest upstream kernel.
test@test-Dell-System-XPS-L322X:~$ uname -a
Linux test-Dell-System-XPS-L322X 3.9.0-030900rc4-generic #201303232035 SMP Sun
Mar 24 00:36:21 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
** Tags added: kernel-bug-exists-upstream
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apport information
** Tags added: apport-collected raring
** Description changed:
- On both versions of the XPS 13 (L322X and L321X) running Ubuntu Raring
- with the latest 3.8 kernel, letting the screen turn off and then back on
- causes the backlight to go to maximum brightness and become not
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