On Apr 7, 2005 10:50 AM, Moritz Muehlenhoff <[email protected]> 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. FWIW, I have the same problem on a T41p with 2.6.11 and 2.6.12-rc2, except that neither returns from suspend-to-ram with video restored on the LCD. I believe I was able to get video restored on an external CRT in either 2.6.12-rc2 or 2.6.12-rc2-mm1, but the LCD still didn't restore (can verify later today, if you'd like). I had dumped out the radeontool regs values before & after the sleep, in case they help. They are attached. I posted these problems in the "Call for help S3" thread, but no one responded. Thanks, Nish
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