Messages in this thread | | | Subject | Re: Linux 2.6.12-rc2 | From | Benjamin Herrenschmidt <> | Date | Fri, 08 Apr 2005 08:43:10 +1000 |
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On Thu, 2005-04-07 at 19:50 +0200, Moritz Muehlenhoff wrote: > Benjamin Herrenschmidt wrote: > > > 1. When resuming from S3 suspend and having switched off the backlight > > > with radeontool the backlight isn't switched back on any more. > > > > I'm not sure what's up here, it's a nasty issue with backlight. Can > > radeontool bring it back ? > > Before suspending I power down the backlight with "radeontool light off" > and with 2.6.11 the display is properly restored. With 2.6.12rc2 the > backlight remains switched off and if I switch it on with radeontool it > becomes lighter, but there's still no text from the fbcon, just the blank > screen. > > > > 2. I'm using fbcon as my primary work environment, but tty switching has > > > become _very_ sloppy, it's at least a second now, while with 2.6.11 it > > > was as fast as a few ms. Is this caused by the "proper PLL accesses"? > > > > Yes. Unfortunately. It's surprised it is that slow though, there > > shouldn't be more than 5 or 6 PLL accesses on a normal mode switch, with > > 5ms pause for each, that should still be very reasonable. It looks like > > we are doing a lot more accesses which I don't completely understand. > > Can you tell me which function you have in mind, so that I can insert > some printks to see how often it's called?
radeon_pll_errata_after_data() calls radeon_msleep() (it's in radeonfb.h)
Ben.
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