On Tue, Feb 15, 2005 at 10:08:11AM +1100, Benjamin Herrenschmidt wrote: > > > Appeared ? hah... that's strange. X is known to fuck up the chip when > > quit, but I wouldn't have expected any change due to the new version of > > radeonfb. From what you describe, it looks like an offset register is > > changed by X, or the surface control. > > > > My patch did not change any of radeonfb accel code though... > > > > I'll catch up with you on IRC ... > > Ok, from our discussions, it's not related to the power management code, > and an engine reset triggered by fbset fixes it. So at this point, I can > see no change in the driver explaining it... > > We did some changes to the VT layer to force a mode setting (and thus an > engine reset) when going away from X, so I can't see why that wouldn't > work, while using fbset later on works ... this goes through the same > code path in the driver... unless we are facing a timing issue... > > X is known to play funny tricks, like touching the engine when it's in > the background (not frontmost VT) and quit, or possibly other bad things > on console switch. Maybe I changed enough delays (speeded up) the mode > switch so that we fall into a case where X has not finished mucking up > with us... > > Can you try adding some msleep(200) or so at the beginning at > radeonfb_set_par() or radeon_write_mode() to see if that makes any > difference ?
Nope. No printk outputs from _set_par, _write_mode, or _engine_init. Just to clarify: the gdm stop is done from tty1 while gdm is running on tty7, so I don't think it's a matter of mode switch logic. If I do "sleep 5; /etc/init.d/gdm stop" and then switch to tty7 and wait for it to stop, all is fine. Also, I'm still seeing the LCD blooming + hang on starting radeonfb. It's something like 1 in 10 boots rather than every boot now though. -- Mathematics is the supreme nostalgia of our time. - 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/
