Some notes about the radeon firmware update:
Mikhail Kshevetskiy let me know that I must replace *all* Radeon firmware
files that the kernel/driver is looking for - this can be seen in dmesg:
...
platform radeon_cp.0: firmware: agent loaded radeon/CAICOS_pfp.bin into memory
platform radeon_cp.0: firmware: agent loaded radeon/CAICOS_me.bin into memory
etc...
So backed up the existing ones in /lib/firmware/radeon and replaced them
with new ones from http://people.freedesktop.org/~agd5f/radeon_ucode/ and
rebooted. Which went well.
The reason I had a try at upgrading the firmware is also that sometimes
for unknow reason my laptop starts blowing hot air like crazy. top
and powertop are showing a laptop that's mostly asleep, however I have the
suspicion that it's the Radeon chip that goes berserk despite being
switched *off*:
$ dmesg | grep radeon
...
radeon: switched off
So I hoped maybe a new firmware would help. It doesn't. Since HP has
installed a BIOS for idiots (TM) on my Pavillon dv7 6130ez one can not
hard switch off the discrete radeon card on it. This doesn't work either:
# echo "profile" > /sys/class/drm/card0/device/power_method
# echo "low" > /sys/class/drm/card0/device/power_profile
# cat /sys/kernel/debug/dri/0/radeon_pm_info
default engine clock: 750000 kHz
current engine clock: 870800 kHz
default memory clock: 775000 kHz
current memory clock: 24970 kHz
voltage: 1100 mV
PCIE lanes: 16
the discrete Radeon card is going on in it's meaningless business of
transforming electricity into heat and fan noise.
*t
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