** Changed in: linux (Fedora)
Status: Unknown => Fix Released
** Changed in: linux (Fedora)
Importance: Unknown => High
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Title:
Regres
I just tested it on my Thinkpad X1 (haswell) and the fix works.
However, there is a side effect. Connecting and Disconnecting the
Power resets the brightness to maximum. Not sure how to go about
working around this.
anmar
On 26 February 2014 23:14, madbiologist <1098...@bugs.launchpad.net> wrote
Same bug (same workarounds) on ThinkPad T440s with current Trusty.
** Tags added: trusty
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Title:
Regression in brightness control on Lenovo Thin
The upstream 3.14-rc4 kernel also contains this commit:
author Rafael J. Wysocki
committer Rafael J. Wysocki
commit a6940190ac15c361862a1a8f50a2072db7184749
tree c73be15646c6418f77a94fede3afc7eabd589dd6
parent 0e9f81d3b7cd0649a3bc437391b6a0650f98f844
Revert "ACPI: Blacklist Win8 OSI for some HP l
This should be fixed in the upstream 3.14-rc4 kernel by these two
commits:
commit bd8ba20597f0cfef3ef65c3fd2aa92ab23d4c8e1 - ACPI / video: Filter the _BCL
table for duplicate brightness values
commit 0e9f81d3b7cd0649a3bc437391b6a0650f98f844 - ACPI / video: Add systems
that should favour native b
I'm using a E49 and still not working without adding parameters.
On Mon, Jan 6, 2014 at 12:11 PM, Anthony Wong
wrote:
> The "missing brightness level" problem can be worked around by using the
> kernel parameter video.brightness_switch_enabled=0.
>
> Add the param to GRUB_CMDLINE_LINUX_DEFAULT in
The "missing brightness level" problem can be worked around by using the
kernel parameter video.brightness_switch_enabled=0.
Add the param to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub, then
run 'sudo update-grub' and reboot.
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On 13.10, the brightness works fine but the stepping is screwed up. In
other words, you don't get to access all of the brightness levels the
LCD offers. Instead, you get half the number of steps. It isn't a show
stopper by any stretch so go ahead and get your X1 carbon. It is the
best machine out t
I'm using an X1 Carbon with 13.10 and the brightness control works fine.
On Wed, Jan 1, 2014 at 11:29 AM, CSRedRat <1098...@bugs.launchpad.net>wrote:
> Fixed? Can i'm buy X1 Carbon? :)
>
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> report.
> https://bugs.laun
Fixed? Can i'm buy X1 Carbon? :)
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Title:
Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and
X1 Carbon
To manage notificati
Using above fixes stepping in ubuntu. The fix is still working under
ubuntu Swapping Ctrl and Fn keys in bios works
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Title:
Regression in brightn
I filed a new bug to capture the issue with the screwed up brightness
stepping (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1221795)
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Titl
I installed Ubuntu 13.10 running 3.11 kernel and I noticed the stepping
is still there. The following fixed the stepping:
sudo sh -c 'echo -n 0 >
/sys/module/video/parameters/brightness_switch_enabled'
Seems that the driver and the GNOME settings daemon, or some other user
space tool, is issuei
Yes, this makes a difference, because you are not using an Ubuntu Linux
Kernel (Saucy is currently on 3.11). If you use Mint, please file your
bugs against https://bugs.launchpad.net/linuxmint not
https://bugs.launchpad.net/ubuntu.
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All of the Fn key combinations that I tested work well. Brightness seems
to have only large stepping 5 steps but I guess its better than nothing.
BTW I use Mint with Cinamon not sure if his makes much of the difference
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Just updated to 3.10.10 no patches also tested live latest ubuntu seems
to work with both.
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Title:
Regression in brightness control on Lenovo Thi
Is that with the newest patches?
On Mon, Sep 2, 2013 at 7:34 AM, lepri13 <1098...@bugs.launchpad.net> wrote:
> Can someone test possible workaround, I am on 3.10.7 when I choose in
> BIOS under keyboard options swap Fn and Ctrl keys brightness and
> keyboard seems to work without Grub startup a
Can someone test possible workaround, I am on 3.10.7 when I choose in
BIOS under keyboard options swap Fn and Ctrl keys brightness and
keyboard seems to work without Grub startup arguments.
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On my Thinkpad X230, the problem was present in May 2013 but now is gone
(3.8.0-25-generic). I cannot tell which kernel update brought the fix.
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Ti
** Branch linked: lp:ubuntu/precise-proposed/linux-lts-raring
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Title:
Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and
X1
** Changed in: linux
Status: Incomplete => In Progress
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Title:
Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and
X1
Linux clint-HP 3.8.0-23-generic #34-Ubuntu SMP Wed May 29 20:22:58 UTC
2013 x86_64 x86_64 x86_64 GNU/Linux
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Title:
Regression in brightness contr
Same issue on HP EliteBook Folio 9470m.
00:00.0 Host bridge: Intel Corporation 3rd Gen Core processor DRAM Controller
(rev 09)
Subsystem: Hewlett-Packard Company Device 18df
Flags: bus master, fast devsel, latency 0
Capabilities:
00:02.0 VGA compatible controller: Intel
** Changed in: linux
Status: In Progress => Incomplete
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Title:
Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and
X1
uname -r
3.8.0-25-generic
bug still exists on thinkpad t430
created new bug:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1183856
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Title:
I can still confirm that this issue exists with kernel 3.8.0-25-generic
on a Lenovo T430.
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Title:
Regression in brightness control on Lenovo Thin
With the latest upgrade to 3.8.0-25-generic #37-Ubuntu SMP Thu Jun 6
20:47:07 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux the problem is not
present on my Lenovo T530 anymore.
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@Seth Forshee (sforshee), I build a patched kernel from Fedora Rawhide with 3
patches (from you repo) 10 minutes ago and all works! Great!
3.10.0-0.rc5.git0.1.bko35622.fc20.B.x86_64
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http
On Tue, 2013-06-11 at 12:45 +, Seth Forshee wrote:
> On Tue, Jun 11, 2013 at 08:54:44AM -, Brain wrote:
> > @Seth Forshee (sforshee), can you provide *all* patches for this bug in
> > 3.10 kernel ?
>
> All the patches used in the build are already posed in the same location
> as the debs.
Fair enough, just thought I'd post my findings here,
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Title:
Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and
X1 Carbon
On Tue, Jun 11, 2013 at 02:49:21PM -, Nathaniel Roach wrote:
> Under patched 3.10-rc5: Backlight control is *COMPLETELY* dependent on
> the shell being able to process the request - Backlight control does not
> work while booting or while the shell is frozen. Otherwise, I appreciate
> the finer
Under patched 3.10-rc5: Backlight control is *COMPLETELY* dependent on
the shell being able to process the request - Backlight control does not
work while booting or while the shell is frozen. Otherwise, I appreciate
the finer control.
(Ubuntu-GNOME 13.04)
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Edit: Behaviour is *exactly* the same as when the bug was not fixed -
brightness can only be relatively moved slightly, and when it does it
flickers. It can be moved specifying a value (not just up/down), but
still flickers.
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Seth: They do apply to 3.9.5 but do not do it cleanly (see errors in
comment #90).
My Edge E330 has an Intel i5-3210M with (only) Intel HD4000 graphics.
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On Tue, Jun 11, 2013 at 09:48:17AM -, Nathaniel Roach wrote:
> Adding those patches to a clean 3.9.5 folder on an Edge E330 results in
> default behaviour (as if no patch were applied).
Can you explain what this means? Are you saying that the patches do
apply cleanly to 3.9.5, but don't work?
On Tue, Jun 11, 2013 at 08:54:44AM -, Brain wrote:
> @Seth Forshee (sforshee), can you provide *all* patches for this bug in
> 3.10 kernel ?
All the patches used in the build are already posed in the same location
as the debs.
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On Tue, Jun 11, 2013 at 09:25:28AM -, Nathaniel Roach wrote:
> I'm getting errors attempting to patch 3.9.5:
Yes, the patches require backporting to anything before 3.10.
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On Tue, Jun 11, 2013 at 12:13:18AM -, Anmar Oueja wrote:
> The kernel 3.10.0-0-generic #2~lp1098216v201306100718 works
> great on a Thinkpad X1 Carbon.
>
> Lowest setting turns off the LCD, which is great. Is this going
> upstream?
It's not clear. There seems to be another solution under dev
Adding those patches to a clean 3.9.5 folder on an Edge E330 results in
default behaviour (as if no patch were applied).
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Title:
Regression in br
I'm getting errors attempting to patch 3.9.5:
0001*.patch:
Hunk #5 FAILED at 1097.
0003*.patch:
Hunk #1 FAILED at 1661.
I'll compile it anyway, and try with 3.10-rc4 later tonight.
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htt
Works fine with my X230 tablet too.
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Title:
Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and
X1 Carbon
To manage notific
@Seth Forshee (sforshee), can you provide *all* patches for this bug in
3.10 kernel ?
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Title:
Regression in brightness control on Lenovo Thinkpad
The kernel 3.10.0-0-generic #2~lp1098216v201306100718 works
great on a Thinkpad X1 Carbon.
Lowest setting turns off the LCD, which is great. Is this going
upstream?
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I just installed the packages on my T530: Backlight control is working
and provides a more fine grained control than with the workaround in
current kernels. If I ramp the brightness up and go down towards 0% than
the last step completely turns off the backlight. But that's nothing
that would be bot
** Changed in: linux
Status: Incomplete => In Progress
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Title:
Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and
X1
We've got a new proposed permanent fix for this problem. I've posted a
test build at the link below, please give it a spin and let me know how
it works.
Note that this kernel is based on 3.10-rc4 and may not be 100% stable.
After testing you'll probably want to go back to using your current
kernel
Confirmed that 3.8.0-22-generic fixes the problem on my X1 Carbon as
well. Thank you!
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Title:
Regression in brightness control on Lenovo Thinkpa
3.8.0-22-generic also fixed this for my X230. Thank you!
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Title:
Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and
X1 Carb
Confirmed 3.8.0-22-generic fixes the issue for me too on my X1 Carbon.
Thanks.
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Title:
Regression in brightness control on Lenovo Thinkpad X230 (
Confirmed 3.8.0-22-generic fixes the issue on my Thinkpad X1 Carbon.
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Title:
Regression in brightness control on Lenovo Thinkpad X230 (+tablet) a
uname -r
3.8.0-22-generic
and only works with:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=\"!Windows 2012\""
the new kernel has no effect for Thinkpads T430, in changelog only T430s
is listed.
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3.8.0-22-generic fixed issue on my X1 Carbon. Many thanks guys! :-)
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Title:
Regression in brightness control on Lenovo Thinkpad X230 (+tablet) an
The *bug* effects ALL Thinkpad ??30s including the EDGE E330 - it is not
specific to the X230 and X1 carbon.
On 24/05/13 17:49, Marius B. Kotsbak wrote:
> Felix, are you sure you rebooted after installing it? What does "uname
> -r" say? Anyway, as this bug report is about X230 and X1 carbon, plea
Felix, are you sure you rebooted after installing it? What does "uname
-r" say? Anyway, as this bug report is about X230 and X1 carbon, please
open another bug report for that hardware.
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h
3.8.0-22-generic fixed the issue on ThinkPad T430s
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Title:
Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and
X1 Carbon
To
Latest kernel update fixed this problem for me on TP X230.
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Title:
Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and
X1 Ca
Last Kernel Updates (3.8.0-22-generic) does not resolve the Problem for
my ThinkPad T430.
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Title:
Regression in brightness control on Lenovo Thin
The latest kernel update resolves this issue for me (3.8.0-22-generic).
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Title:
Regression in brightness control on Lenovo Thinkpad X230 (+tablet
** Branch linked: lp:ubuntu/raring-proposed/linux-ppc
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Title:
Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and
X1 Carbon
This seems to be fixed now using the latest kernel update (Linux x1
3.8.0-22-generic)
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Title:
Regression in brightness control on Lenovo Thinkpad
So I just updated to 3.8.0-21 and the problem is *back* . Please note
that the problem was properly fixed in 3.8.0-20
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Title:
Regression in brigh
I confirm. 3.8.0-20-generic solve the problem on latest model of the x1
carbon.
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Title:
Regression in brightness control on Lenovo Thinkpad X230
Where I can download patches from 3.8.0-20-generic (this BUG)
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Title:
Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and
X1
** Tags removed: verification-needed-raring
** Tags added: verification-done
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Title:
Regression in brightness control on Lenovo Thinkpad X230 (+t
Kernel 3.8.0-20-generic fixed the issues on Lenovo T430s as well.
Everything works perfectly now and I did not notice any lag descibed in
comment #66 (I am using Unity).
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Works in Kernel 3.8.0-20-generic. 16 brightness steps are available
again.
On a different note: I don't recall changing the brightness being so
laggy. The onscreen notification updates with about 0.5 seconds delay in
Gnome-Shell (3.8.1-0ubuntu1~raring1.2) and the brightness slider in the
settings
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
The workaround I added to the description solves the problem for X230
tablet.
** Description changed:
== Raring SRU Justification ==
Impact: A number of ThinkPad models have a workaround in the ACPI
backlight implementation for Windows 8 that more or less completely
breaks backlight co
Adding acpi_osi='!Windows 2012' not working on ThinkPad X230
** Attachment added: "dmidecode"
https://bugs.launchpad.net/linux/+bug/1098216/+attachment/3666336/+files/dmidecode
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I test your kernel and my kernel(Fedora) with you patch in KernelBZ...
Brightness control not working normally.
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Title:
Regression in brightness
The attachment "Patch for THINKPAD EDGE E330" seems to be a patch. If
it isn't, please remove the "patch" flag from the attachment, remove the
"patch" tag, and if you are a member of the ~ubuntu-reviewers,
unsubscribe the team.
[This is an automated message performed by a Launchpad user owned by
I have the problem exactly as described in this bug:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1121951, on a
Thinkpad X1 Carbon. Is that definitely the same as this bug? If so, I'm
happy to test kernel versions, if someone shows me how.
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** Bug watch added: Red Hat Bugzilla #903136
https://bugzilla.redhat.com/show_bug.cgi?id=903136
** Also affects: linux (Fedora) via
https://bugzilla.redhat.com/show_bug.cgi?id=903136
Importance: Unknown
Status: Unknown
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Same issue on my ThinkPad 430s
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Title:
Regression in brightness control on Lenovo Thinkpad X230 and X1 Carbon
To manage notifications about this
Same for me on x1 carbon. After the "40" fix Fn keys works in the range
of 15 - 75.
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Title:
Regression in brightness control on Lenovo Thinkpad X
Same problem on Lenovo Thinkpad T530:
Changing the screen brightness from the control panel applet "Brightness and
lock" does work, changing the brightness using the FN key does not.
I noticed that when I set the brightness to 100% in the control panel
applet the fn keys do not work at all (slide
The hot keys started working for me (but only within a range 15% through
80%) after I used this workaround I just mentioned.
Crazy.
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Title:
Regr
Here is a workarond for roaring on lenovo x1 carbon.
sudo su
echo 40 > /sys/class/backlight/acpi_video0/brightness
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Title:
Regression in brightn
Seth, I booted into your kernel at
http://people.canonical.com/~sforshee/lp1098216/linux-3.8.0-19.29~lp1098216v201304221819/
on my T530.
It's definitely mixed results:
+ brightness keys on keyboard work again, and I get the full brightness range
- shift+brightness keys don't step through the very
Same problem on an X230 tablet thinkpad with raring.
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Title:
Regression in brightness control on Lenovo Thinkpad X230 and X1 Carbon
To manage no
Lenovo ThinkPad Edge E530. Same shi trouble.
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Title:
Regression in brightness control on Lenovo Thinkpad X230 and X1 Carbon
To manage notifi
I have just tested on T430s and the kernel only partially fixed the issue.
Function keys do work fine but there are 2 problems:
1. Notifications are not updated properly. They are showing the lowest value
all the time
2. Brightness in system settings has no effect.
appending acpi_osi="!Windows 2
The test kernel in #49 works for me on an X1 Carbon.
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Title:
Regression in brightness control on Lenovo Thinkpad X230 and X1 Carbon
To manage n
A couple of updates.
We've applied a patch for raring to quirk acpi_osi="!Windows 2012" for
machines known to be affected by this bug. This isn't a long-term
solution, but it will keep things working for the time being.
I'm also continuing to pursue a more permanent solution upstream.
Towards tha
** Description changed:
+ == Raring SRU Justification ==
+
+ Impact: A number of ThinkPad models have a workaround in the ACPI
+ backlight implementation for Windows 8 that more or less completely
+ breaks backlight control.
+
+ Fix: Add an OSI quirk to no longer claim to be Windows 8 on these
+
Seth, is there any outstanding data you need for this bug? I can provide
nearly anything you need from my Lenovo T530.
Thanks
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Title:
Regression
Thanks Seth. I guess we need to do something with upstream to take it.
can't Canonical add it to their Ubuntu sauce?
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Title:
Regression in bright
Anmar: see comment #27
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Title:
Regression in brightness control on Lenovo Thinkpad X230 and X1 Carbon
To manage notifications about this bug go
So what's the verdict? Have you guys found the offending commit?
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Title:
Regression in brightness control on Lenovo Thinkpad X230 and X1 Carbon
Thanks for the link Marius. This is a good stop gap solution. However,
the bug still exists and it is a regression from earlier kernel
release.
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Ti
Not sure if this is helpful, but (assuming you are talking about the
screen brightness not the keyboard backlit feature)
http://askubuntu.com/questions/262003/brightness-not-working-on-lenovo
worked for me on a Lenovo Thinkpad X1 Carbon with Ubuntu 13.04.
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Seth: I was just skimming through
https://bugzilla.kernel.org/show_bug.cgi?id=51231 and realised that it
may be of note that my Edge E330 is running in full on x86/csm
compatibility mode - everything EFI is disabled.
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Bugs, w
Using the -r1-noblpatch kernel (the clean one), I get a shortened
"range" i.e. I can use ~30%-70% but accessing values outside that range
causes flickering (using gnome3 and the Fn+F7/F8 keys). This seems to be
dependent on the value of /sys/class/backlight/acpi_video0/brightness
I manually increm
Nathaniel: You did try to change the brightness before collecting dmesg,
and it did not change the brightness? I'm not seeing the errors I
expected, though I'm confident they should occur because they happen
when I load your ACPI tables into a debugger.
Maybe try poking some brightness values into
Alright, here's the file.
Fresh extract of the tarball, but using the same config.
** Attachment added: "e330_dmesg_noblpatch.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1098216/+attachment/3623337/+files/e330_dmesg_noblpatch.txt
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Or if you still have other kernels installed even easier would be to
boot to a kernel with which you experienced the issue.
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https://bugs.launchpad.net/bugs/1098216
Title:
Regression in
So basically build a the same kernel sans patch and any extra arguments?
Building one now.
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https://bugs.launchpad.net/bugs/1098216
Title:
Regression in brightness control on Lenovo Th
Nathaniel: You need to boot to a kernel where your backlight doesn't
work, i.e. no special kernel patches and no passing acpi_osi="!Windows
2012". Then try to adjust the backlight several times. After that run
"dmesg > dmesg.txt" in a terminal and attach dmesg.txt.
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Seth, I'm more of a power user, what would I need to do to test that?
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https://bugs.launchpad.net/bugs/1098216
Title:
Regression in brightness control on Lenovo Thinkpad X230 and X1 Car
Nathaniel, your problem is fundamentally very similar but a little
different. I suspect that if you boot without "!Windows 2012" you'll
find some ACPI error messages in dmesg. I'd appreciate it if you could
give this a try and then attach your dmesg so I can verify that this is
correct.
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