On Tue, 27 Apr 2010 14:06:41 -0400 Alex Deucher <alexdeucher@xxxxxxxxx> wrote: > >> > I've been testing radeon KMS PM with 2.6.34-rc* for a few days now and > >> > I wanted to send you my testcase. Even though PM is enabled, the > >> > defaults of my card are somewhat insane so no real powermanagement > >> > takes place - i.e. the card doesn't get clocked down. is there any way > >> > to force the card to use a different setting where less power is being > >> > consumed? > >> > >> The current code doesn't handle a lot of cases properly. Please try > >> my latest patch set against Dave's drm-next tree: > >> http://people.freedesktop.org/~agd5f/pm3/ > >> It allows you to enable dynamic pm or force a static power mode via sysfs. > >> > >> Alex > > > > Will do so at the end of the week when (hopefully) 2.6.34-rc6 is out > > and I have mor etime on my hands. > > Could you a bit more explicit on how I could set a static power mode > > via sysfs? I've never worked with sysfs before so some hints would be > > greatly appreciated. > > enable/disable dynpm: > echo 1 > /sys/class/drm/card0/device/dynpm > > force a static power state: > echo 1.0 > /sys/class/drm/card0/device/power_state > > Alex > Hi Alex, I just built drm-radeon-testing as I saw the patches have already been merged there. It built fine, I updated the firmware files as the Xor-Wiki suggests, but when I boot into the resulting kernel with dynpem on my screen goes all wonky, a portion on the right side is missing and I've got vertical lines running down the screen. Somehow I managed to look at dmesg and saw that the speed was being set correctly (it even set the lowest one available). When I tried "sudo echo 0 > /sys/class/drm/card0/device/dynpm" to see whether switching off dynpm would fix the "drunken" screen the system told me I was not permitted to access the file... I am attaching the syslog from the faulty boot in case it's of any help... Klaus -- Klaus Doblmann B.A. - http://straightrazorguy.net - FSF member #7570 PGP-Key: http://www.doblmann.de/pgp_key.asc http://twitter.com/klausdoblmann A: Because it messes up the order in which people normally read text. See http://en.wikipedia.org/wiki/Posting_style Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?
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