Le mar, 27 déc 2005 12:27:08 +1100, Benjamin Herrenschmidt a écrit : > > > > Also, does it work if you don't use radeonfb ? radeonfb shouldn't touch > > > MC_AGP_LOCATION and the DRM change only affects that, so I'm a bit > > > surprised. > > > > > > Ben. > > > > > > > Do you still want me to try that now that reverting the two patches > > made the job? > > Definitely, and we need to figure out why the patch cause a regression. > Those patches fixes a serious issues with a number of machines. Removing radeonfb from the kernel only makes things worse: the box gets completly frozen when reproducing the bug (no more ssh access nor sysrq). > > The problem is very nasty as all the various parties involved (radeonfb, > X radeon driver, radeon DRM, etc...) all try to reconfigure the card > memory map in differently bogus ways... > > Can you add printk's to the kernel to check the values in > CONFIG_MEMSIZE, CONFIG_APER_SIZE, priv->fb_location and the values > calculated for gart_vm_start ? Then tell me what that printk gets on X > start and when switching consoles. I get these figures when I first start X: [ 104.399101] ### fb_location is now e0000000 [ 104.399104] ### mem_size is 2000000 [ 104.399107] ### aper_size is 4000000 [ 104.399109] ### gart_vm_start is e2000000 The sad thing is that it looks like the crash occurs *before* entering the radeon_do_init_cp function, assuming it should enter it again when I switch back from a tty to X (I've put some printk's at the beginning of the function but didn't see them in dmesg although other things showed up), so I don't know where to put the printk's in order to get other figures... Thanks, Jules
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