*** This bug is a duplicate of bug 397617 ***
https://bugs.launchpad.net/bugs/397617
Good news everyone. I just noticed Acer made available a bios-update
that fixes the issue of controlling the backlight when using KMS on the
timeline 5810T. Download bios version 2.30 and install using freedos
*** This bug is a duplicate of bug 397617 ***
https://bugs.launchpad.net/bugs/397617
** This bug has been marked a duplicate of bug 397617
brightness no more working on karmic (KMS)
--
xrandr backlight property control missing (when using KMS?)
https://bugs.launchpad.net/bugs/428054
You r
Changing status back to confirmed. Thanks for the post/comment,
trendzetter.
The last time I checked it, it was there, now it isn't... The weird
thing is, that the backlight control actually works as expected (using
quick keys), for me, without xrandr --prop showing anything...
** Changed in: xse
The backlight property only shows up when using nomodeset. I can us it
to control the backlight then but it's still missing even with the
latest updates and KMS enabled.
$ dpkg-query -s xserver-xorg-video-intel
Package: xserver-xorg-video-intel
Status: install ok installed
Priority: optional
Secti
I'm closing this bug, since now the BACKLIGHT_CONTROL property is
visible and usable. Not still being able to adjust the backlight is a
different issue, and there exists many bug reports, as mentioned in
comment #4.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Confirmed => Fix R
Cheers for the hint, executorvs!
However, that doesn't work. The options I have for xrandr
BACKLIGHT_CONTROL are native, legacy, combination and kernel, and none
of them makes any difference.
The only difference to my comment #2 is that now I can see and select
different backlight control methods
Matti,
while not a perfect solution the command "xrandr --output LVDS --set
BACKLIGHT_CONTROL native" will make screen brightness work (if not
perfectly) when entered. it is not persistent and needs to be reentered
on boot either manually or by setting it as a startup process.
--
xrandr backligh
trendzetter, that workaround does not work for me. And, the recent
kernel update, with backlight fix on Intel driver, didn't help neither.
Nor both of them together...
--
xrandr backlight property control missing (when using KMS?)
https://bugs.launchpad.net/bugs/428054
You received this bug notif
People looking for a temporary workaround can try this:
Add GRUB_CMDLINE_LINUX="nomodeset acpi_backlight=vendor" in /etc/default/grub
and run update-grub.
--
xrandr backlight property control missing (when using KMS?)
https://bugs.launchpad.net/bugs/428054
You received this bug notification beca
This is a problem with all of the Acer timeline series as well.
https://bugs.launchpad.net/ubuntu/+source/gnome-power-manager/+bug/438537
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/432835
--
xrandr backlight property control missing (when using KMS?)
https://bugs.launchpad.net/bugs/4280
Seems to me that this might be a mayor issue. I don't know how many people are
affected but many people are buying notebooks with these intel graphic chips.
Not being able to adjust brightness is a serious problem for usability.
I have the intel GMA4500MHD chip.
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xrandr backlight property con
Confirming on Acer Aspire 2920 w/ Intel 965GM, Karmic up-to-date.
When using Fn-Left or Fn-Right to adjust brightness, the bar on the
screen moves, but display does not change. *).
Running "xorg --prop" is missing backlight control. However:
m...@acer:/proc/acpi/video/GFX0$ cat DD0[1-5]/brightne
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New => Confirmed
--
xrandr backlight property control missing (when using KMS?)
https://bugs.launchpad.net/bugs/428054
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-video
** Attachment added: "BootDmesg.gz"
http://launchpadlibrarian.net/31664712/BootDmesg.gz
** Attachment added: "CurrentDmesg.txt"
http://launchpadlibrarian.net/31664713/CurrentDmesg.txt
** Attachment added: "Dependencies.txt"
http://launchpadlibrarian.net/31664714/Dependencies.txt
** Att
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