I have the same problem on a Thinkpad W510 (Nvidia Quadro FX 880M),
running the latest nvidia binary drivers from the ubuntu repo.
** Tags added: w510
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Backlight controls on ThinkPad T510 no longer function when using proprietary
drivers
https://bugs.launchpad.net/bugs/562005
You received
** Changed in: nvidia-graphics-drivers (Ubuntu)
Status: Confirmed = In Progress
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Backlight controls on ThinkPad T510 no longer function when using proprietary
drivers
https://bugs.launchpad.net/bugs/562005
You received this bug notification because you are a member of Ubuntu-X,
which
Hey Tom,
Thanks for notifying the nvidia developers, hopefully they release a fix
soon. However, I don't think 'in progress' is the right status, unless
you are taking responsibility for releasing a fix. I think the correct
procedure would be to set the status to 'triaged', post updates here
that
I have created a thread about this bug at nvnews.net, where NVIDIA
developers often respond to user issues:
http://www.nvnews.net/vbulletin/showthread.php?p=2240345#post2240345
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Backlight controls on ThinkPad T510 no longer function when using proprietary
drivers
** Tags added: t410
** Tags removed: w510
--
Backlight controls on ThinkPad T510 no longer function when using proprietary
drivers
https://bugs.launchpad.net/bugs/562005
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to nvidia-graphics-drivers in
** Attachment removed: dmidecode output from t510 4313CTO
http://launchpadlibrarian.net/44387565/dmidecode.t510.txt
--
Backlight controls on ThinkPad T510 no longer function when using proprietary
drivers
https://bugs.launchpad.net/bugs/562005
You received this bug notification because you
Also, dmesg reports that thinkpad_acpi's backlight controls are not
enabled, so it is certainly not controlling the backlight in the VT:
thinkpad_acpi: This ThinkPad has standard ACPI backlight brightness control,
supported by the ACPI video driver
thinkpad_acpi: Standard ACPI backlight
I can now force the nvidia driver to control the backlight. I don't know
why it didn't work before, I did 2 hard reboots and the setting didn't
take effect. Regardless, the nvidia's backlight controller is still less
effective than the one used by nouveau or in a text mode VT. The nvidia
driver's
I have no idea how to effectively monitor changes in /sysfs. The best
method i'm using is to use tree to map out Sysfs, and then search for
interesting things and monitor them. If someone could please share a
better method i'd be very appreciative.
I have not found if there is a difference in
** Attachment added: dmidecode output from t510 4313CTO
http://launchpadlibrarian.net/44387565/dmidecode.t510.txt
--
Backlight controls on ThinkPad T510 no longer function when using proprietary
drivers
https://bugs.launchpad.net/bugs/562005
You received this bug notification because you
** Changed in: nvidia-graphics-drivers (Ubuntu)
Status: New = Confirmed
--
Backlight controls on ThinkPad T510 no longer function when using proprietary
drivers
https://bugs.launchpad.net/bugs/562005
You received this bug notification because you are a member of Ubuntu-X,
which is
Same problem here on a T410, also with nvidia 3100m graphics. Brightness
adjustment works in the terminal, and worked before installing the
proprietary drivers. If you need any info (logs etc.) let me know.
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Backlight controls on ThinkPad T510 no longer function when using proprietary
drivers
Correction: when I add [Option RegistryDwords
EnableBrightnessControl=1 ] to my xorg.conf it works!
Maybe this should be in the default xorg.conf for the closed-source
drivers...
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Backlight controls on ThinkPad T510 no longer function when using proprietary
drivers
** Tags added: lucid
--
Backlight controls on ThinkPad T510 no longer function when using proprietary
drivers
https://bugs.launchpad.net/bugs/562005
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to nvidia-graphics-drivers in ubuntu.
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