Adding GRUB_CMDLINE_LINUX="nomodeset acpi_backlight=vendor" in
/etc/default/grub and running update-grub works as a workaround for me
too.
--
Screen brightness does not function on Acer Aspire Timeline 5810TZ
https://bugs.launchpad.net/bugs/438537
You received this bug notification because you ar
Oh, and it seems above solution works best if KMS is disabled.
--
Screen brightness does not function on Acer Aspire Timeline 5810TZ
https://bugs.launchpad.net/bugs/438537
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
--
ubuntu-bugs m
Found a workaround for the 5810T:
Add the following to the GRUB_CMD_LINUX_DEFAULT entry in
/etc/default/grub: acpi_backlight=vendor
--
Screen brightness does not function on Acer Aspire Timeline 5810TZ
https://bugs.launchpad.net/bugs/438537
You received this bug notification because you are a me
I found something interesting that might help resolve this. I was
updating my karmic on my T5810, and AIGLX somehow broke. So it came up
without any hardware 3d acceleration at all, but the brightness applet
and keys worked!
--
Screen brightness does not function on Acer Aspire Timeline 5810TZ
ht
** Attachment added: "Dependencies.txt"
http://launchpadlibrarian.net/32666268/Dependencies.txt
** Attachment added: "DevkitPower.txt"
http://launchpadlibrarian.net/32666269/DevkitPower.txt
** Attachment added: "GConfNonDefault.txt"
http://launchpadlibrarian.net/32666270/GConfNonDefault
