I'm sorry but I'm still running Trusty LTS waiting for the next LTS to
install. It seems the 4.4 kernel is only available for Wily but Wily
comes with 4.2 and I'll have to install Wily and the kernel. Is it
sufficient for me to test a recent daily image from
http://cdimage.ubuntu.com/kubuntu/daily-
Confirmed on 4.2-RC1. Same workarounds still work. BTW I also checked on
Fedora 22 which has kernel 4.0.4 (admittedly lesser version but) which
means it's not Ubuntu specific anyhow.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Tags removed: kernel-bug-exists-upstream-4
Hello. I downloaded the latest kernel 4.1.1 for the Trusty LTS that I am
using and even there the behaviour is the same. Again the workarounds I
previously mentioned still work.
Now I'm not an expert but I really don't think this is a kernel bug at
all because if the Xorg conf entry is there then
** Tags removed: needs-upstream-testing
** Tags added: kernel-bug-exists-upstream kernel-bug-exists-upstream-4.1.1
** Changed in: linux (Ubuntu)
Status: Expired => Confirmed
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Hello. Sorry for the delay. I've now installed Trusty and the problem
persists. However the solution provided by
http://askubuntu.com/a/395442/170127 works. (The command line option
detailed at http://askubuntu.com/a/382833/170127 works as well.)
** Changed in: linux (Ubuntu)
Status: Incomp
Hello Christopher. I did the update just now and nothing has changed.
Here's the output you asked for:
$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
45CN38WW
10/21/2011
BTW as I already mentioned, I wonder if you are looking for the problem
in the wrong place. I filed th
apport information
** Attachment added: "BootDmesg.txt"
https://bugs.launchpad.net/bugs/1255428/+attachment/3980888/+files/BootDmesg.txt
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** Attachment added: "IwConfig.txt"
https://bugs.launchpad.net/bugs/1255428/+attachment/3980891/+files/IwConfig.txt
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** Tags added: staging
** Description changed:
After upgrading to Saucy, on my Lenovo IdeaPad Z570 with Intel HD
Graphics 3000, it is no longer possible to control the LCD brightness
using the hardware brightness control keys. Likewise for the KDE power
management sett
apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1255428/+attachment/3980890/+files/CurrentDmesg.txt
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** Attachment added: "CRDA.txt"
https://bugs.launchpad.net/bugs/1255428/+attachment/3980889/+files/CRDA.txt
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Ti
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** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1255428/+attachment/3980896/+files/ProcInterrupts.txt
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** Attachment added: "RfKill.txt"
https://bugs.launchpad.net/bugs/1255428/+attachment/3980899/+files/RfKill.txt
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** Attachment added: "ProcEnviron.txt"
https://bugs.launchpad.net/bugs/1255428/+attachment/3980895/+files/ProcEnviron.txt
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** Attachment added: "UdevLog.txt"
https://bugs.launchpad.net/bugs/1255428/+attachment/3980901/+files/UdevLog.txt
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** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1255428/+attachment/3980897/+files/ProcModules.txt
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** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1255428/+attachment/3980892/+files/Lspci.txt
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** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1255428/+attachment/3980894/+files/ProcCpuinfo.txt
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** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1255428/+attachment/3980900/+files/UdevDb.txt
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** Attachment added: "PulseList.txt"
https://bugs.launchpad.net/bugs/1255428/+attachment/3980898/+files/PulseList.txt
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** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1255428/+attachment/3980905/+files/WifiSyslog.txt
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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** Attachment added: "Lsusb.txt"
https://bugs.launchpad.net/bugs/1255428/+attachment/3980893/+files/Lsusb.txt
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Hello Christopher. Sorry for the delay. I am having problems downloading
the daily images but I trusted with Alpha 2, and the bug persists there.
And I did not test the mainline kernels since as noted earlier, even
with the Saucy kernel, if we directly write to
/sys/class/backlight/intel_backlight
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Title:
LCD brightness control keys and widget do not work on I
I filed a separate bug for Intel as
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
intel/+bug/1255428
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Title:
[regres
If the Intel bug is on a separate package please indicate which package
I should file against. Thanks.
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Title:
[regression] Changing
Same problem with laptop as discont -- IdeaPad Z570. The graphics system
is Intel HD Graphics 3000, not NVidia. Should the bug really be filed
against the nvidia package?
Too bad that there is no ETA for this fix...
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Sorry for the extra post, but people using Intel might find this
workaround useful:
$ sudo -i
$ echo 150 > /sys/class/backlight/intel_backlight/brightness
Source: http://askubuntu.com/a/363806/170127
The maximum value is available in
/sys/class/backlight/intel_backlight/max_brightness
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