On Apr 7, 2005 3:45 PM, Benjamin Herrenschmidt <[EMAIL PROTECTED]> wrote: > On Thu, 2005-04-07 at 11:54 -0700, Nish Aravamudan wrote: > > 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. > > I would say the different value in LVDS_GEN_CNTL explains it. I'll see > if I can force radeonfb to save/restore this.
Great! That seemed odd to me, as well. I'll be more than happy to try any patches (I'll take a look at the code tonight myself). Thanks, Nish - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/