** No longer affects: linux (Fedora)
** No longer affects: linux (Ubuntu)
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Title:
[Lenovo ThinkPad X220] kernel 3.13 i915
As per https://bugs.launchpad.net/linux/+bug/1308674/comments/50.
** Project changed: linux => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Status: New => Invalid
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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This issue went away for me sometime in the last year.
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Title:
[Lenovo ThinkPad X220] kernel 3.13 i915 brightness settings broken
Launchpad has imported 24 comments from the remote bug at
https://bugzilla.redhat.com/show_bug.cgi?id=1067071.
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will be sent to the remote bug automatically. Read more about
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This issue is still existing.
Thinkpad X230
$ uname -a
Linux *** 3.13.0-46-generic #77-Ubuntu SMP Mon Mar 2 18:23:39 UTC 2015
x86_64 x86_64 x86_64 GNU/Linux
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I can confirm that the issue with kernel 3.13.0-46 still exist. The only
way around I see is using 3.14-kernel
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Title:
[Lenovo
Don't want to douple post, but it's unclear where this bug is maintained, here
or in:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1377120
just in case,
I experience the brightness going to minimum on:
* undock
* after waking up from suspend
Lenovo x230
$ cat /etc/issue
Ubuntu 12.04.5
eliash, thank you for your comment. So your hardware and problem may be
tracked, could you please file a new report with Ubuntu by executing the
following in a terminal while booted into the default Ubuntu kernel (not a
mainline one) via:
ubuntu-bug linux
For more on this, please read the
Which kernel has a fix?
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Title:
[Lenovo ThinkPad X220] kernel 3.13 i915 brightness settings broken
when going from docked -
look here https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1377120
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Title:
[Lenovo ThinkPad X220] kernel 3.13 i915 brightness
3.14.1-031401-generic has a fix
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Title:
[Lenovo ThinkPad X220] kernel 3.13 i915 brightness settings broken
when going from docked
I am having the same problem on my X230
Linux hostname 3.13.0-39-generic #66-Ubuntu SMP Tue Oct 28 13:30:27 UTC
2014 x86_64 x86_64 x86_64 GNU/Linux
Found a workaround: press CTRL+ALT+F1 to go into terminal mode, press
FN+BrightnessUp to reset brightness, press CTRL+ALT+F7 to go back to
Xwindows.
There is a kernel that has a fix, I've reported all of it. I don't know
why that kernel is not distributed yet.
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Title:
[Lenovo
FWIW: This is what I get when the problem appears:
[110652.405086] [ cut here ]
[110652.405143] WARNING: CPU: 2 PID: 1381 at
/build/buildd/linux-3.13.0/drivers/gpu/drm/i915/intel_display.c:9237
intel_modeset_check_state+0x62d/0x780 [i915]()
[110652.405146] encoder's hw
Muelli I do have Bios version 8DET69WW (1.39 ) release-date 07/18/2013.
Yours has a higher major number but on older date
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Title:
Muelli / Akif D., thank you for your comment. So your hardware and problem may
be tracked, could you please file a new report with Ubuntu by executing the
following in a terminal while booted into the default Ubuntu kernel (not a
mainline one) via:
ubuntu-bug linux
For more on this, please
Roger Kind Kristiansen / adnc / Matthias Baur, thank you for your comment. So
your hardware and problem may be tracked, could you please file a new report
with Ubuntu by executing the following in a terminal while booted into the
default Ubuntu kernel (not a mainline one) via:
ubuntu-bug linux
I can also confirm this for a Lenovo ThinkPad T430s with Lenovo ThinkPad
Mini Dock Plus Series 3.
OS: Ubuntu 14.04.1
Kernel: Linux ThinkPad 3.13.0-36-generic #63-Ubuntu SMP Wed Sep 3 21:30:07 UTC
2014 x86_64 x86_64 x86_64 GNU/Linux
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I've a X220 with 14.04 and I'm facing the above problem aswell. In my
setup I do have a docking station with an external monitor hooked up.
Undocking my notebook darkens the notebook screen. Docking it again
gives normal brightness and undocking again gives again regular
brightness. So the problem
I can add that docking and undocking again re-enables brightness
adjustment.
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Title:
[Lenovo ThinkPad X220] kernel 3.13 i915
I just tried this with kernel 3.13.0-34.60 and I'm still experiencing
the problem. Brightness set to minimum and not adjustable after
undocking.
I originally encountered another (duplicate?) bug post which suggested
to upgrade the x220's BIOS, so I'm also running the latest BIOS version
(8DET69WW
Daniel Hahler, thanks for the update on your issue. As per the Ubuntu
Kernel Team, for linux (Ubuntu) bug reports, one would would mark this
bug Triaged when the original reporter has tested this to the mainline
kernel. As well, the OR would want to provide as much information, for
example check
I have experienced the same problem on a Lenovo X220t, but could not
reproduce it now after the latest kernel update (3.13.0-34.60).
** Changed in: linux (Ubuntu)
Status: Incomplete = Triaged
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Is this bug related to these threads I found:
*
http://linux-kernel.2935.n7.nabble.com/3-13-i915-brightness-settings-broken-when-going-from-docked-gt-undocked-td808925.html
* https://bugs.freedesktop.org/show_bug.cgi?id=75001
** Bug watch added: freedesktop.org Bugzilla #75001
I have an X220 running Ubuntu 14.04 amd64, and I can confirm that:
- linux-image-3.13.0-27-generic has this bug
-
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.14-trusty/linux-image-3.14.0-031400-generic_3.14.0-031400.201403310035_amd64.deb
does not have this bug.
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** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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Title:
[Lenovo ThinkPad X220] kernel 3.13 i915 brightness
Siddharth Agarwal, thank you for your comment. So your hardware and problem may
be tracked, could you please file a new report with Ubuntu by executing the
following in a terminal while booted into a Ubuntu repository kernel (not a
mainline one) via:
ubuntu-bug linux
For more on this, please
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