https://bugs.freedesktop.org/show_bug.cgi?id=28402
--- Comment #77 from Da Fox da_fox@mad.scientist.com 2010-09-21 11:26:57 PDT --- (In reply to comment #73)
(In reply to comment #71)
Did you set the agpmode module parameter for radeon or are you getting 4x setup automatically? If the later I wonder why I get 1x automatically.
I get AGP 1x as default as well. I changed it with the kernel parameter to 4x and it seems to work as good as the old setting.
I also set radeon.agpmode=4 on the kernel commandline in grub.conf. I don't know what the default is, I could test it if it's important. But agpmode=4 has works with the older kernels, so I don't think that is the issue
(In reply to comment #74)
(In reply to comment #72)
(In reply to comment #71)
[drm] AGP mode requested: 1
[...]
[...] I wonder why I get 1x automatically.
The line above means you have (the equivalent of) radeon.agpmode=1 somewhere, either on the kernel command line or maybe in /etc/modprobe.d/ . Without an explicit option, the default is determined by the BIOS and can sometimes be tweaked in the BIOS setup.
It does not seem so:
shambhala:~> grep -r agpmode /etc shambhala:~#1> grep -r agpmode /boot shambhala:~#1>
That is odd, grep -r on /boot should match at least System.map: ~ # grep -r agpmode /boot/ /boot/System.map:c15a506d r __param_str_agpmode /boot/System.map:c1707b90 r __param_agpmode /boot/System.map:c173fcc0 d radeon_agpmode_quirk_list /boot/System.map:c17ec984 B radeon_agpmode /boot/grub/grub.conf:kernel (hd0,5)/boot/vmlinuz ro root=/dev/sda6 quiet splash=silent,theme:gerabellum CONSOLE=/dev/tty1 resume2=file:/dev/sda6:0x103130 radeon.agpmode=4 drm_kms_helper.poll=0 grep: warning: /boot/boot: recursive directory loop