Public bug reported:
Laptop DV6 6030EL
I have installed recently the new kernel 3.11 on ubuntu 13.04 to solve
some problem with the radeon card and improve the support of i915. From
the beginning I have noticed something strange, some sensors from
psensor did not show up as for instance the lmsensor radeon pci or the
coretemp, the backlight was again set to the maximum value while usually
what I do is:
sudo gedit /etc/default/grub
GRUB_CMDLINE_LINUX="acpi_backlight=vendor"
sudo gedit /etc/rc.local
echo 3000 > /sys/class/backlight/intel_backlight/brightness
The radeon sensor in kernel 3.10.10 was showing -128 since I have turned
off it by doing
sudo gedit /etc/rc.local
modprobe radeon
sleep 1
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
exit 0
With the new kernel at the startup the temperature was much higher than
usual and backlight was not set to the right value. The biggest issue
with the new kernel is the fan stops to work or in some case seems to
lose power (like start and stop). I have switched back to 3.10.10 but
this bug could be very critical. I did not noticed the problem
immediately and the laptop was almost burning.
Has someone noticed similar problem on the new kernel?
Thanks
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
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https://bugs.launchpad.net/bugs/1224141
Title:
Acpi problem??? and fan do not work properly
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