On Thu, 19 Feb 2015, Chavdar Ivanov wrote: > I am probably repeating others, but if you add > > Option "NoAccel" "True" > > to your Device section in xorg.conf it might work. I am in a similar point > under -current. With NoAccel set to True it works fine. Without it I can > run Xorg, which gives me black screen with a functional mouse, a small > white rectangle in the top left corner; I can kill Xorg from a different > shell. If I run "startx" with only xterm and twm in .xinitrc, I get up to > the pointer for the top-left corner of the xterm requested, then it panics.
Yes, this works. With a minimal "xorg.conf": Section "Device" Option "NoAccel" "True" Identifier "Card0" Driver "radeon" EndSection Xorg works very well. ISTR some suggestions about using Option "AccelMethod" "SNA" although that might have been aimed at i915drmkms users. I'll try it on radeondrmkms for completeness. Without the X option, "startx" gets as far as launching my window manager (fvwm) although the root window stays black. It switches from the watch-face cursor glyph to the arrow and then the machine panics. I'll see about using a serial console to get more information. I typically test these things with -current but I operate the machine as a diskless client (netbsd-7 on local disk). There is a very strange behavior in that radeondrmkms will only work if "/dev/console" is on a boot-time-populated tmpfs "/dev" and not on the NFS root filesystem. If "/dev/console" exists on the NFS root, the kernel panics with: cnopen: no console device. (I noted a similar behavior in: http://mail-index.netbsd.org/current-users/2015/02/23/msg026742.html although radeondrmkmsfb is totally unusable in these cases. In the case of my i386 ThinkPad A31p, it's only NFS root that gives that behavior--"/dev/console" on local ffs works fine.) -- |/"\ John D. Baker, KN5UKS NetBSD Darwin/MacOS X |\ / jdbaker[snail]mylinuxisp[flyspeck]com OpenBSD FreeBSD | X No HTML/proprietary data in email. BSD just sits there and works! |/ \ GPGkeyID: D703 4A7E 479F 63F8 D3F4 BD99 9572 8F23 E4AD 1645