*** This bug is a duplicate of bug 548709 ***
https://bugs.launchpad.net/bugs/548709
I realize the last post was about three years ago, but I don't think
this bug is a duplicate of bug #548709. After using
xrandr --output DVI-I-2 --brightness 0.5
xrandr --output DVI-I-3 --brightness 0.5
Only the brightness of DVI-I-3 changes. No adapters, just two DVI-I
cables. When I supend and wake, the brightness of the left monitor has
changed as well.
I use an NVidia GeForce GTX 285.
I attached the output of 'lspci -vvnn', 'dmesg' and 'Xorg.0.log' and
'Xorg.0.log.old'.
Hope it helps
** Attachment added: "logs.tar.gz"
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/553757/+attachment/3545911/+files/logs.tar.gz
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https://bugs.launchpad.net/bugs/553757
Title:
dual monitors with different brightness
Status in “xserver-xorg-video-ati” package in Ubuntu:
Incomplete
Bug description:
Binary package hint: xserver-xorg-video-ati
After I upgrade Lucid from version Alpha to beta 1, I suddenly found
the different colors(brightness) between my dual monitors, which
attached to a dual-head video card of ATI Radeon HD 3650 and in an
expanded screen configuration. The main monitor is so bright that I
can not read text clearly when it with white background. I tried to
adjust the monitor settings, but it made little improvement. Actually,
I also have Windows 7 installed in my computer, It works fine with
there two monitors. I also tried Fedora 12 for testing this problem.
Fedora12 was acting normal with the initial installation. After I
upgrade it (update to xorg-driver-ati 6.13), the same problem like I
suffered in Lucid beta 1 just appeared! So I think the problem is from
the upstream, Xorg! I fired this bug because I am expecting a patch
from Ubuntu before the Lucid release.
[lspci]
00:00.0 Host bridge [0600]: Intel Corporation 82Q35 Express DRAM Controller
[8086:29b0] (rev 02)
Subsystem: Lenovo Device [17aa:3037]
01:00.0 VGA compatible controller [0300]: ATI Technologies Inc Mobility
Radeon HD 3600 Series [1002:9598]
Subsystem: ASUSTeK Computer Inc. Device [1043:01da]
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