While the boot parameter i915.disable-pch_pwm=0 worked on ubuntu 12.04 with
kernel 3.8.0-35.50, it doesn't seem to work for me on ubuntu 14.04 with kernel
3.13.0-24.
I dual boot windows so I cannot enable legacy options rom.
Is there no other solution ?
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Thanks Guillaume #112 works!
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Title:
Brightness control broken on XPS13 and 3.8.0-16, 3.8.0-22 and
3.11.0-12
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For other ones that have the same problem, I find a solution here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/comments/109
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No sure this could workaround or if it even the same issue but a tip was
recently posted here :
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/ see #109
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As I didn't want double boot with windows I kept my L322X in legacy boot mode
before I repartitionned to remove the furbished DIAGS and boot FAT partitions
so that I reclaim the whole SSD for sda1 and swap (for hibernation) then I
fresh installed ubuntu Raring over Precise.
No need to say I'm a
I have the same problem with the last kernel (3.13.0-24), I can't adjust
the brigthness. When I try to adjust the brigthness, I can see the
animation on the screen but I doesn't change anything, the brigthness
stay at low level. I must use the kernel 3.11.20 to adjust the
brigthness.
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Guillaume, I didn't re-read the whole thread, but did you? At a time,
the issue was said to be fixed for ubuntu installed over a BIOS MODE
only, i.e. not over UEFI. Did you check this or do you already know
you're in UEFI (only usefull I beleive for double boot with W7+)?
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Yeah, i read it, but the actually proposed solution doesn't work with the
new kernel and uefi.
Le 19 avr. 2014 17:20, Bib 1163...@bugs.launchpad.net a écrit :
Guillaume, I didn't re-read the whole thread, but did you? At a time,
the issue was said to be fixed for ubuntu installed over a BIOS
Daniele, I didn't re-read the whole thread, but did you? At a time, the
issue was said to be fixed for ubuntu installed over a BIOS MODE only,
i.e. not over UEFI. Did you check this or do you already know you're in
UEFI (only usefull I beleive for double boot with W7+)?
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no effect
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Title:
Brightness control broken on XPS13 and 3.8.0-16, 3.8.0-22 and
3.11.0-12
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ildella@slap:~$ sudo apt-get install linux-image-generic linux-headers-generic
Reading package lists... Done
Building dependency tree
Reading state information... Done
linux-headers-generic is already the newest version.
linux-image-generic is already the newest version.
linux-image-generic
Point is that I am using 3.8 cause is the last one that works. The
default 14.04 which is 3.13.0-23-generic , I've tried it and is not
working
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Try
sudo apt-get install linux-image-generic-lts-trusty linux-headers-
generic-lts-trusty
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Title:
Brightness control broken on XPS13 and
just updated to 14.04 from 13.10 and still not working.
I am stuck on kernel
3.8.0-29-generic #42-Ubuntu SMP Tue Aug 13 19:40:39 UTC 2013
to make the screen bright works.
Should I open a new bug?
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@Daniele
Ubuntu 14.04 latest kernel is 3.13.0-23-generic which is working fine
with XPS 13 backlight. Update your kernel.
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Title:
Brightness
maybe i have some old settings that is causing the problem? I am upgrading this
since 13.04.
What should I check?
FYI, the controls fo change brightness works in the sense that I see the bar
changing on the screen from minimum to maximum and back. But the brightness
does not change a bit.
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I've installed 14.04 this morning and there's no kernel upgrade available.
keyboard backlight is ok, is screen brightness that is stuck on minimum and
cannot be changed...
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There is no kernel upgrade because you are on a different stack. You
have to install it manually via terminal. Type
sudo apt-get install linux-image-generic linux-headers-generic
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Is this supposed to be fixed? I have XPS13 (Feb 2013 edition, i7) with latest
saucy 3.11.0-15 and problem is still there.
Last kernel that works properly is
Linux slap 3.8.0-29-generic #42-Ubuntu SMP Tue Aug 13 19:40:39 UTC 2013
which I am running right now, while the system is upgraded to
I had to boot on 3.8.0-29 kernel for ever due to low brightness making
my computer unusable. Boot parameter on 3.8.0-35.50 did the trick, thank
you very much.
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This bug was fixed in the package linux - 3.2.0-58.88
---
linux (3.2.0-58.88) precise; urgency=low
[Brad Figg]
* Release Tracking Bug
- LP: #1257370
[ Kamal Mostafa ]
* SAUCE: (no-up) drm/i915: i915.disable_pch_pwm overrides PCH_PWM_ENABLE
quirk
- LP: #1163720
This bug was fixed in the package linux - 3.2.0-58.88
---
linux (3.2.0-58.88) precise; urgency=low
[Brad Figg]
* Release Tracking Bug
- LP: #1257370
[ Kamal Mostafa ]
* SAUCE: (no-up) drm/i915: i915.disable_pch_pwm overrides PCH_PWM_ENABLE
quirk
- LP: #1163720
This bug was fixed in the package linux - 3.5.0-45.68
---
linux (3.5.0-45.68) quantal; urgency=low
[Steve Conklin]
* Release Tracking Bug
- LP: #1257035
[ Kamal Mostafa ]
* SAUCE: (no-up) drm/i915: i915.disable_pch_pwm overrides PCH_PWM_ENABLE
quirk
- LP:
This bug was fixed in the package linux - 3.11.0-15.23
---
linux (3.11.0-15.23) saucy; urgency=low
[Brad Figg]
* Release Tracking Bug
- LP: #1259259
[ Tim Gardner ]
* [Config] Build-in ohci-pci
- LP: #1244176
linux (3.11.0-15.22) saucy; urgency=low
[Brad Figg]
This bug was fixed in the package linux - 3.8.0-35.50
---
linux (3.8.0-35.50) raring; urgency=low
[Steve Conklin]
* Release Tracking Bug
- LP: #1257102
[ Andy Whitcroft ]
* [Config] CONFIG_DEBUG_BUGVERBOSE=y
- LP: #1252353
[ Kamal Mostafa ]
* SAUCE: (no-up)
This bug was fixed in the package linux - 3.5.0-45.68
---
linux (3.5.0-45.68) quantal; urgency=low
[Steve Conklin]
* Release Tracking Bug
- LP: #1257035
[ Kamal Mostafa ]
* SAUCE: (no-up) drm/i915: i915.disable_pch_pwm overrides PCH_PWM_ENABLE
quirk
- LP:
This bug was fixed in the package linux - 3.11.0-15.23
---
linux (3.11.0-15.23) saucy; urgency=low
[Brad Figg]
* Release Tracking Bug
- LP: #1259259
[ Tim Gardner ]
* [Config] Build-in ohci-pci
- LP: #1244176
linux (3.11.0-15.22) saucy; urgency=low
[Brad Figg]
This bug was fixed in the package linux - 3.8.0-35.50
---
linux (3.8.0-35.50) raring; urgency=low
[Steve Conklin]
* Release Tracking Bug
- LP: #1257102
[ Andy Whitcroft ]
* [Config] CONFIG_DEBUG_BUGVERBOSE=y
- LP: #1252353
[ Kamal Mostafa ]
* SAUCE: (no-up)
Had this problem after updating from 13.04 to 13.10. Installed the
kernel from saucy-proposed and added the boot parameter as per this bug.
On an XPS13 L322X and running 3.11.0-15-generic #23. Works now!
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As is mentioned in the README in http://zinc.canonical.com/~kamal/xps13
-pch-bootparam/, using the boot parameter does correct the black screen
on boot (yay!), but does not enable backlight control (which is a shame
because it's a really effective for preserving battery life).
I'm on an XPS13
Given that the fix implemented is a optional boot param with no
regression potential, I'm going to set the tags appropriately.
** Tags removed: verification-needed-precise verification-needed-raring
verification-needed-saucy
** Tags added: verification-done-precise verification-done-raring
XPS13-with-UEFI users, please take note and try the following:
The Ubuntu -proposed kernels now allow you to set a new boot parameter
i915.disable_pch_pwm=0 which should correct the black screen on boot
problem, and may enable backlight control functionality after boot.
However, the boot
Just tested 3.11.0-15.23 (yesterday was 3.11.0-15.22): same result as
above.
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Title:
Brightness control broken on XPS13 and 3.8.0-16, 3.8.0-22
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-
raring' to 'verification-done-raring'.
If verification is not done by 5 working days from
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-
saucy' to 'verification-done-saucy'.
If verification is not done by 5 working days from
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
Hi, I have tested 3.11.0-15-generic on Suacy from proposed and it behaves
exactly as 3.11.0-14-generic that is:
- With Secure Boot = Off; Load Legacy Rom = ON; display brightness control is OK
- With Secure Boot = On; black display
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Same results with me on Saucy as @lviggiani
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Title:
Brightness control broken on XPS13 and 3.8.0-16, 3.8.0-22 and
3.11.0-12
To manage
** Branch linked: lp:ubuntu/precise-proposed/linux-lts-saucy
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Title:
Brightness control broken on XPS13 and 3.8.0-16, 3.8.0-22 and
3.11.0-12
** Changed in: linux (Ubuntu Raring)
Status: In Progress = Fix Committed
** Also affects: linux (Ubuntu Quantal)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Saucy)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Quantal)
I have prepared a test kernel for saucy and raring that may help Dell
XPS13 systems which experience black screen on boot and non-functional
backlight controls. (In particular, this case has been reported when
UEFI BIOS is enabled on XPS13's). This test kernel is _only_ relevant
for XPS13's.
I tested on an L322X with _F_HD display and A09 BIOS in UEFI mode.
$ cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-3.11.0-14-generic root=/dev/mapper/ubuntu--vg-root ro
splash quiet i915.disable_pch_pwm=0 vt.handoff=7
If I use i915.disable_pch_pwm=0 with the legacy OPROM enabled, I have to run
echo
Hi people, this message is not really related to this bug. I'd like to
inform the audience of L322X owners of an other bug with the touchpad
speed that can't be set:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1233202
If you meet this behaviour and this is a problem for you, please tell
This bug was fixed in the package linux - 3.5.0-43.66
---
linux (3.5.0-43.66) quantal; urgency=low
[ Brad Figg ]
* Release Tracking Bug
- LP: #1242895
[ Timo Aaltonen ]
* SAUCE: ubuntu/i915: silence unclaimed register poking debug messages
- LP: #1138787
[
** Tags removed: verification-needed-quantal
** Tags added: verification-done-quantal
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Title:
Brightness control broken on XPS13 and 3.8.0-16,
I'be just tested kernel 3.12 from mainline adn the bug is still there (UEFI
mode):
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/
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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-
quantal' to 'verification-done-quantal'.
If verification is not done by 5 working days
Correction: Tested with 3.8.0-32 kernel from raring-proposed on a Toshiba
laptop displaying the same problem.
New kernel fixes the issue - on first boot - brightness controls work again.
After suspend - minimum brightness and controls do not work.
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** Summary changed:
- Brightness control broken on XPS13 with 3.8.0-16 and 3.8.0-22
+ Brightness control broken on XPS13 and 3.8.0-16, 3.8.0-22 and 3.11.0-12
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Vadim, I have successfully upgraded to 13.10. I am still booting with
3.8.0-29-generic even on Saucy. The installation process kept the kernel
I was using, so I think you can safely try to upgrade.
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This bug was fixed in the package linux - 3.2.0-55.85
---
linux (3.2.0-55.85) precise; urgency=low
[Steve Conklin]
* Release Tracking Bug
- LP: #1233349
[ Upstream Kernel Changes ]
* kernel-doc: bugfix - multi-line macros
- LP: #1223920
* Revert ARM: 7810/1:
This bug was fixed in the package linux - 3.2.0-55.85
---
linux (3.2.0-55.85) precise; urgency=low
[Steve Conklin]
* Release Tracking Bug
- LP: #1233349
[ Upstream Kernel Changes ]
* kernel-doc: bugfix - multi-line macros
- LP: #1223920
* Revert ARM: 7810/1:
Also kernel 3.11.5 from here http://kernel.ubuntu.com/~kernel-
ppa/mainline/v3.11.5-saucy/ is broken: balck display on Dell XPS 13
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Title:
I have dell xps 13 too and the latest kernel where brightness works is
3.8.0-29. So I'm staying on it right now (Ubuntu 13.04) and according
the comments it's not safe to upgrade to 13.10.
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3.8.0-32 from proposed is still broken on XPS/UEFI
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Title:
Brightness control broken on XPS13 with 3.8.0-16 and 3.8.0-22
To manage
I've just upgraded to kernel 3.11.0.12.13 on Dell XPS 13 and the display
brightness is broken again (0%).
WIth 3.8.0-29.42 it works.
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Title:
I've just upgraded to kernel 3.11.0.12.13 on Dell XPS 13 and the display
brightness is broken again (0%). This is on Saucy 13.10.
With 3.8.0-29.42 it works.
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Tested with 3.8.0-32 kernel from raring-proposed on a Toshiba laptop displaying
the same problem.
New kernel fixes the issue - brightness controls work again.
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** Also affects: linux (Ubuntu Precise)
Importance: Undecided
Status: New
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Title:
Brightness control broken on XPS13 with 3.8.0-16 and
** Changed in: linux (Ubuntu Precise)
Status: New = Fix Committed
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Title:
Brightness control broken on XPS13 with 3.8.0-16 and 3.8.0-22
** Changed in: linux (Ubuntu Precise)
Assignee: (unassigned) = Kamal Mostafa (kamalmostafa)
** Changed in: linux (Ubuntu Precise)
Status: Fix Committed = In Progress
** Changed in: linux (Ubuntu Raring)
Status: Fix Released = In Progress
** Changed in: linux (Ubuntu)
tested with 3.8.0-32 kernel from raring-proposed, x86_64 A09 UEFI mode.
Bug is still present, brightness is always minimum, and Fn+F4/F5 does
nothing.
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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-
precise' to 'verification-done-precise'.
If verification is not done by 5 working days
** Branch linked: lp:ubuntu/precise-proposed/linux-ti-omap4
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Title:
Brightness control broken on XPS13 with 3.8.0-16 and 3.8.0-22
To manage
Hi Dinki (curious-mitchell)
I think the point is that this laptop IS supplied AND certified for Ubuntu
single boot and as so is supplied in BIOS (they say Legacy) mode.
The LCD back-light issue appeared as a regression for the ones who stayed in
BIOS mode, but also appeared for those who
@dinky : officially, dell only support 12.04 LTS at the moment. Stick
with it if you want a better experience and don't want to live
dangerously ;-)
Windows also have a bunch of bugs, you need to acknowledge that, but you
don't know about them because it is not open. With ubuntu (more
generally,
@autra
Yes: check my bugs ;)
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Title:
Brightness control broken on XPS13 with 3.8.0-16 and 3.8.0-22
To manage notifications about this bug go
Could somebody at least reopen this bug, please, as it is not fixed in
UEFI mode ?
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Title:
Brightness control broken on XPS13 with 3.8.0-16 and
@Bib @autra
Thanks for your thoughts - it's good to keep things in perspective. My
point is more that rapid adoption of Ubuntu would be achieved faster if
these recurring 'bugs' with flagship hardware could be sorted out. That
said, I'm a fairly happy Ubuntu user, and have been using it since
Martin
Maybe if you run apport-collect 1163720 this will give more to eat to our
kind Kamal?
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Title:
Brightness control broken on XPS13 with
** Tags added: l322x
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Title:
Brightness control broken on XPS13 with 3.8.0-16 and 3.8.0-22
To manage notifications about this bug go to:
Still work in 3.8.0-31-generic x86_64 A09 BIOS mode
I found another bug that reports keyboard backlight that can't go back
to autodim on ambiant light changes once FnF6 was pressed since last
boot : https://bugs.launchpad.net/dell-sputnik/+bug/1056386
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and still NOT working in 3.8.0-31-generic x86_64 A09 UEFI mode
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Title:
Brightness control broken on XPS13 with 3.8.0-16 and 3.8.0-22
To manage
I don't understand why this is such an ongoing problem - isn't the XPS
13 ultrabook supposed to be the developer laptop? I thought the whole
point was to provide a seamless experience for developers - and others -
who want a Ubuntu ultrabook that's fully supported and 'just works'.
What's going on
Not fixed, still present on kernel 3.8.0-31-genric
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Title:
Brightness control broken on XPS13 with 3.8.0-16 and 3.8.0-22
To manage
I have the same problem, brightness control doesn't work with kernel
upper to 3.8.0-29-generic
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Title:
Brightness control broken on XPS13 with
I *need* ubuntu in UEFI mode, so this bug is *not* fixed for me.
Please, reopen it.
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Title:
Brightness control broken on XPS13 with 3.8.0-16 and
Can confirm that XPS13 booting UEFI is broken by the update to 3.8.0-30;
brightness is not adjustable again. Fixed by reverting to the 3.8.0-29
kernel.
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Just as info, for me it works since 3.8.0-30 without UEFI. So, for me
it's actually fixed.
Linux sputnik 3.8.0-30-generic #44~precise1-Ubuntu SMP Fri Aug 23
18:32:41 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
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3.8.0.30-44 fixed L322X brightness and keyboard backlight controls (Bios
A09 with 64bit ubuntu installed in BIOS mode).
Thank you Kamal
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Title:
@ Martin: the key combinations are with the Fn key, not the Ctrl
key.
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Title:
Brightness control broken on XPS13 with 3.8.0-16 and 3.8.0-22
To
I changed to EFI without reinstalling before, that didn't fix it.
After updating to the newest kernel it works now.
Linux mango 3.8.0-30-generic #44-Ubuntu SMP Thu Aug 22 20:52:24 UTC 2013
x86_64 x86_64 x86_64 GNU/Linux
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alex, you know that by switching to EFI you did nothing? you are suppose
to not only switch mode to UEFI, but ALSO install OS in UEFI mode for
brightness to work on .29 kernel. Unfortunately, it seems like the fix
for Brightness control in BIOS mode broke the brightness in UEFI mode.
So this is
arf, yes, thank you Bib, but that's what I mean :
- kernel 3.8.0-29 : everything ok, brightness is adjustable, with Fn+F4/F5 or
via a XFCE widget
- kernel 3.8.0-30 : nothing work, brightness always minimum, Fn+F4/F5
doesn't work, XFCE widget doesn't work.
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there's an error in my previous report.
- kernel 3.8.0-29 : everything ok, brightness is adjustable, with
CTRL+F4/F5 or via a XFCE widget
- kernel 3.8.0-30 : nothing work, brightness always minimum, CTRL+F4/F5
doesn't work, XFCE widget doesn't work.
My laptop is a Dell XPS 13 with the 1080p
same problems as Andrea, brightness control is broken (very low, fixed,
controls don't work) with the last kernel 3.8.0-30.44.
I have to start with the previous kernel 3.8.0-29, but ctrl+F4/F5 doesn't work
and brightness is always maximum.
Dell XPS 13 1080p, 13.04 64bit.
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Just upgraded to the latest kernel available (3.8.0-30-generic) and the
brightness control is broken (very low, fixed, controls don't work),
while with the previous version (3.8.0-29-generic) everything was
working fine. New Dell XPS 13 1080p, 13.04.
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This bug was fixed in the package linux - 3.8.0-30.44
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linux (3.8.0-30.44) raring; urgency=low
[Steve Conklin]
* Release Tracking Bug
- LP: #1215596
[ Upstream Kernel Changes ]
* Don't attempt to send extended INQUIRY command if skip_vpd_pages is set
- LP:
** Branch linked: lp:ubuntu/quantal-proposed/linux-ti-omap4
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https://bugs.launchpad.net/bugs/1163720
Title:
Brightness control broken on XPS13 with 3.8.0-16 and 3.8.0-22
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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
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
Hi Daniel. Had to do a reinstall; hadn't left any space on the drive
for an EFI partition.
I installed the Ubuntu 13.04 x64 release, which came with the 3.8.0-19
kernel. This had a strange result, which was that the screen was fixed
to minimum (backlight off) brightness, and wouldn't change.
This bug was fixed in the package linux - 3.11.0-1.4
---
linux (3.11.0-1.4) saucy; urgency=low
[ Tim Gardner ]
* Bump ABI when making changes to the inclusion list lest
you cause conflicts with existing installed kernel
packages.
- LP: #1210331
-- Tim Gardner
Addie: Did you do a reinstall or just switch to EFI mode and update the
bootloader? If the Former, please confirm what the difference in
packages and package versions is between your previous install and your
current install.
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Can confirm Nikki1993's fix: switching to UEFI boot fixes the issue
entirely.
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Title:
Brightness control broken on XPS13 with 3.8.0-16 and
Still an issue on 3.8.0-27 64-bit.
frank-g-hansen's script works around the issue well. For some reason,
my case selection has to read:
case ${1} in
true|resume|thaw)
... in order to resume brightness control after sleep.
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LoL, My brightness works as intended. I am on Ubuntu 13.04 64bit Kernel
3.8.0-27-generic
It didn't work when I installed Ubuntu in BIOS mode (since XPS 13 ships with
Motherboard that is UEFI), when I switched to UEFI mode and reinstalled my OS,
brightness issue was fixed. I can lower it down
Hi,
how about a workaround? I cannot write a script at all, but from Google
searches on how to do stuff I created my own workaround:
1) For working brightness buttons after startup and a startup brightness
of 50 % I added the following to the file /etc/rc.local (before the exit
0):
bash -c echo
L322X F4/F5 Broken
Bios A08
3.8.0-26-generic
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https://bugs.launchpad.net/bugs/1163720
Title:
Brightness control broken on XPS13 with 3.8.0-16 and 3.8.0-22
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