Just add the acpi_backlight=vendor (grub) and put in
/etc/X11/xorg.conf.d/80-backlight.conf :
Section Device
Identifier Intel Graphics
Driver intel
Option Backlight intel_backlight # use your backlight that
works here
EndSection
ArchWiki:
gagzou, thank you for your comment. If you have a bug with your backlight,
please feel free to 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 read the
@penalvch
Im afraid I no longer own this hardware and cannot verify this bug as fixed.
Im sorry!
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Title:
toshiba_acpi no control of display
camden lindsay, this bug report is being closed due to your last comment
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/606547/comments/22
regarding you no longer have the hardware. For future reference you can
manage the status of your own bugs by clicking on the current status in
the
camden lindsay, this bug was reported a while ago and there hasn't been
any activity in it recently. We were wondering if this is still an
issue? If so, could you please test for this with the latest development
release of Ubuntu? ISO images are available from
*** This bug is a duplicate of bug 935778 ***
https://bugs.launchpad.net/bugs/935778
There is some work in progress towards fixing this bug, under the
duplicate report #935778. There is now a kernel that does successfully
allow the brightness to be changed after suspend, albeit with a few
I'm seeing this on a Toshiba R835-P92 running Oneric with
3.0.0-17-generic. Also seeing it with kernels that I've built from
linux-stable (v3.3.1) and wireless-testing (master-2012-03-27). I
haven't explored any of the patches mentioned above or compared them to
what's been merged to stable.
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Same thing happens on my Toshiba z830 running Precise with kernel
3.2.0-20-generic.
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Title:
toshiba_acpi no control of display backlight after
Still experiencing this after upgrading to Precise with kernel
3.2.0-18-generic.
My day job has been keeping me incredibly busy these last few weeks, so
I haven't had a chance to apply the patches referenced above to the
kernel modules yet. Trying to keep the big report alive as much as
anything.
Still the same in current Oneiric with kernel 3.0.0-15, on a Toshiba
R830.
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Title:
toshiba_acpi no control of display backlight after suspend to
Me too -- Toshiba R835-P56x.
Linux gear 3.0.0-16-generic #28-Ubuntu SMP Fri Jan 27 17:44:39 UTC 2012
x86_64 x86_64 x86_64 GNU/Linux
Latest BIOS update from Toshiba (Version 3.50, according to dmidecode).
I'm programming-literate, and I've been trying to figure out where to
start putting
For those wanting to help with a solution, here is pretty much
everything I've found out:
- Brightness control for these laptops used to be done with the toshset
tool, via the 'toshiba' module and a /dev/toshiba device which exposed
the Toshiba HCI (hardware config interface?) to user space.
-
Martin Ling -- many thanks!
I'll read through and try the patches you mention and go from there,
when I get a chance. Things have been busy at work lately, so no
promises, but I'm incredibly happy to have a starting point!
Thanks!!
-Luke
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Same bug with Portege R835, kernel 2.6.38-10-generic
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Title:
toshiba_acpi no control of display backlight after suspend to ram
To manage
I can confirm this bug remains in both 2.6.38-8 and 3.0.0rc1 kernel with
an R705. It seems it still needs to be fixed upstream unfortunately.
uname -a
Linux ubuntu 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011
x86_64 x86_64 x86_64 GNU/Linux
uname -a
Linux ubuntu
After checking and installing all updates available, my R705 still does
not respond to changes in backlight brightness settings after a suspend
to ram.
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I will check when i get home if it is fixed for my r705 as well.
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Title:
toshiba_acpi no control of display backlight after suspend to ram
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Ok, I'm not sure this will help, but since a few days (and no special kernel
upgrade), the problem isn't appearing anymore on that Portégé R830. I can
suspend to ram/resume and the brightness is ok.
I'm not really sure what changed though.
Sorry for the lack of understanding there.
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You
I confirm this bug on a Toshiba Portégé R830 with model name :
Intel(R) Core(TM) i5-2410M CPU @ 2.30GHz
# lspci
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family
DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
** Changed in: linux (Ubuntu)
Status: New = Confirmed
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Title:
toshiba_acpi no control of display backlight after suspend to ram
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I believe this bug is tracked upstream at
https://bugzilla.kernel.org/show_bug.cgi?id=21012, and for Debian in
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=599768.
** Bug watch added: Linux Kernel Bug Tracker #21012
http://bugzilla.kernel.org/show_bug.cgi?id=21012
** Bug watch added:
** Tags added: acpi
** Tags added: acpi-method-return
** Tags added: acpi-parse-exec-fail
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Title:
toshiba_acpi no control of display backlight
I can confirm this issue also affects the Toshiba R700. If this should
be filed upstream can someone recommed where?
It seems the hardware power cycle (shutdown or suspend to disk) is the
only way to regain brightness control. The toshest util enables changing
the brightness and turning off the
** Tags added: kernel-suspend
** Tags added: kj-triage
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** Attachment added: dmesg output
http://launchpadlibrarian.net/52058581/dmesg.log
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** Attachment added: lspci -vnvn output
http://launchpadlibrarian.net/52058596/lspci-vnvn.log
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** Attachment added: uname -a output
http://launchpadlibrarian.net/52058599/uname-a.log
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** Attachment added: /proc/version_signature
http://launchpadlibrarian.net/52058622/version.log
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