Exactly same problem here with Vaio-VPCY11V9E.
acpi_video0, acpi_video1 and intel_backlight folders at
/sys/class/backlight and only intel_backlight works when echo'ing values
to brightness with ubuntu 11.10
This is a really PITA, is there any workaround available? It would be a
huge pain-saver?
Update on Ubuntu 11.10 (Oneiric)
Hi there,
just a quick update on screen brightness issue status, for the Vaio Y series.
The problem seems related to gnome-power-manager intel 915 driver... Kamal
Mostafa has released a path that should be already present in Ubuntu 11.10.
I don't know if this
I have this kind of problem on a Sony VAIO CW2C5E (nVidia 310M). The
only way to control screen backlight is using nvidiabl module from
https://github.com/guillaumezin/nvidiabl
I can see gnome power monitor correctly interfaces with backlight module
because changing settings in gconf works.
Dear Francesco,
Today Mr. Tovalds released the new linux kernel. It has some kind of fix for
sony. I'm going to test it this evening after work.
I'll let you know if the issue has changed/resolved. More information can be
found here http://lkml.org/lkml/2010/5/16/89
Regards,
Bastiaan
On Tue,
bas, to remove the patch you have to remove the files that are in the
script subfolder of the patch from /etc/acpi/ and the files that are
in the events subfolder of the patch from /etc/acpi/events/
Then reboot your laptop and... patch is gone ;-)
--
Screen brightness doesn't work on Vaio Y
Dear Francesco,
Do you know when there is going to be a proper fix for this issue? It seems
to be present since ubuntu 8.04 and still isn't fixed.
I'm pretty newbe when it comes to launchpad and bug fixing so could really
appreciate your input.
This issue seems to be on lots of notebooks.
Dear bas,
I really don't know when an official fix will be available.
I think that the problem is related to the change in the way fn keys are dealt
with: the new trend is to manage the events generated by the key pressure using
gnome power management (or something like that, I don't remember
** Changed in: gnome-power-manager (Ubuntu)
Status: Fix Released = In Progress
--
Screen brightness doesn't work on Vaio Y
https://bugs.launchpad.net/bugs/524967
You received this bug notification because you are a member of Ubuntu
Desktop Bugs, which is a bug assignee.
--
desktop-bugs
I installed the fix on my VPCY11S1E Ubuntu Desktop 10.04 Gnome.
Fn F5 and F6 seem to give me a brightness bar now at the right top of
the screen but is doesn't change the brightness although the bar slides.
How do I uninstall the fix, please. I want to wait for the official
Happy that works for both of you too :-)
I have noticed that sometimes (I think if keys are pressed many times
quickly), acpid stops working, and FN keys does not work anymore. No
time to investigate it now.
Cheers, and happy ubuntu! ;-)
Francesco
** Changed in: gnome-power-manager (Ubuntu)
Hi Francesco;
Script solved my issue in Ubuntu 9.10. I hope that they have solved the issue
or added your script to upcoming 10.04 version. Thanks for your effort.
Özhan
--
Screen brightness doesn't work on Vaio Y
https://bugs.launchpad.net/bugs/524967
You received this bug notification
The scripts fixed the issue for me.
Thanks a lot!
Daniel
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Screen brightness doesn't work on Vaio Y
https://bugs.launchpad.net/bugs/524967
You received this bug notification because you are a member of Ubuntu
Desktop Bugs, which is a bug assignee.
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desktop-bugs mailing list
I have the same problem with karmic on my sony series Y.
I can get the brightness level and change it with:
sudo setpci -s 00:02.0 F4.B
values are hexadecimal, and vary from 00 to FF.
I have prepared a couple of file to let ACPI catch FN5 and FN6, and a
couple of scripts to increase and decrease
Hi;
I am using VPCYS1E (Y Series) Sony Vaio notebook, I am using Ubuntu 9.04 with
2.6.31-20-generic kernel. I am also experiencing same issue, i couldn't control
screen brightness with any of gnome and linux tools . I have tried disabling
Acpi from kernel also tried acpi_backlight=vendor but
Thank you for taking the time to report this bug and help to improve
Ubuntu.
This is nothing to do with acpi-support, which is a deprecated package
for handling only those ACPI events that aren't handled by the standard
kernel input layer. Reassigning to gnome-power-manager, which I believe
is
Thank you for your bug report. Please run killall gnome-power-manager
gnome-power-manager 21 | tee ~/gpm.log, press the buttons a few
times and then attach the resulting log file to this bug report
** Changed in: gnome-power-manager (Ubuntu)
Importance: Undecided = Medium
** Changed in:
Sorry, I meant killall gnome-power-manager gnome-power-manager
--verbose 21 | tee ~/gpm.log in my last comment there
--
Screen brightness doesn't work on Vaio Y
https://bugs.launchpad.net/bugs/524967
You received this bug notification because you are a member of Ubuntu
Desktop Bugs, which is a
Here goes the log file. I have pressed the buttons several times to
cover the entire scale shown in Gnome.
** Attachment added: gpm.log
http://launchpadlibrarian.net/39461056/gpm.log
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Screen brightness doesn't work on Vaio Y
https://bugs.launchpad.net/bugs/524967
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