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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https://bugs.launchpad.net/bugs/1163720
Title:
Brightness control broken on XPS13 and 3.8.0-16, 3.8.0-22 and
3.11.0-12
Status in The
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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https://bugs.launchpad.net/bugs/1163720
Title:
Brightness control broken on XPS13 and 3.8.0-16, 3.8.0-22 and
3.11.0-12
Status in The Linux Kernel:
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
Try
sudo apt-get install linux-image-generic-lts-trusty linux-headers-
generic-lts-trusty
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https://bugs.launchpad.net/bugs/1163720
Title:
Brightness control broken on
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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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:
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 - 3.8.0-35.50
---
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 - 3.8.0-35.50
---
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 - 3.11.0-15.23
---
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]
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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https://bugs.launchpad.net/bugs/1163720
Title:
Brightness control broken on XPS13 and
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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https://bugs.launchpad.net/bugs/1163720
Title:
Brightness control broken on XPS13 and 3.8.0-16, 3.8.0-22 and
3.11.0-12
** Branch linked: lp:ubuntu/precise-proposed/linux-lts-saucy
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https://bugs.launchpad.net/bugs/1163720
Title:
Brightness control broken on XPS13 and 3.8.0-16, 3.8.0-22 and
** 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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https://bugs.launchpad.net/bugs/1163720
Title:
Brightness control broken on XPS13
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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