** Description changed:
On some sony vaio laptops xbacklight 1.1-1 (latest release) on Ubuntu
8.1 detects no display with a backlight. I have a Sony Vaio vgn fw290
with an ati graphics card which cannot have its backlight settings
changed. I expected that querying xbacklight would allow me
** Package changed: ubuntu => fglrx-installer (Ubuntu)
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No backlight control on sony laptops with ati gfx card
https://bugs.launchpad.net/bugs/305672
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Bug confirmed on Sony Vaio FW21E with an ATI Radeon HD3470. Fglrx
drivers.
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No backlight control on sony laptops with ati gfx card
https://bugs.launchpad.net/bugs/305672
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** Changed in: ubuntu
Status: New => Confirmed
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No backlight control on sony laptops with ati gfx card
https://bugs.launchpad.net/bugs/305672
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** Attachment added: "lspci-vvnn.log"
http://launchpadlibrarian.net/20315792/lspci-vvnn.log
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No backlight control on sony laptops with ati gfx card
https://bugs.launchpad.net/bugs/305672
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uname -a
Linux mahir-laptop 2.6.27-9-generic #1 SMP Thu Nov 20 22:15:32 UTC 2008 x86_64
GNU/Linux
cat /proc/version_signature
Ubuntu 2.6.27-9.19-generic
** Attachment added: "dmesg.log"
http://launchpadlibrarian.net/20315784/dmesg.log
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No backlight control on sony laptops with a
Yeah, so I can confirm the backlight doesn't work with Ubuntu's
proprietary driver (one that it installs with), fglrx, and radeonhd. The
problem is that Vista gives me twice the battery life of Ubuntu just
because it dims the backlight, Ubuntu is kind of unusable for me unless
I am on a charger.
I
It is very important that the fglrx driver (the proprietary one from amd/ati)
is removed from the system, where an open driver should work. Also it can be
important to shut down you computer and start it again if you want to use a
free driver, because fglrx changes some registers, which get only
