It took me a while to track this one down, so I'll describe it here. The Xorg driver for radeon has a problem with power management. The workaround is to install the radeonfb (frame buffer) driver even if you don't care about text mode. http://www.thinkwiki.org/wiki/Problem_with_high_power_drain_in_ACPI_sleep So far so good. However, as of kernel 2.6.18-1.2200.fc5, the argument to the radeonfb driver "radeon_force_sleep=1" is no longer valid, and the driver refuses to load on discovering it. The solution is to change it to "force_sleep=1". So in /etc/modprobe.conf, the appropriate line is: options radeonfb force_sleep=1 If you make this change, build yourself a new initrd to make it effective on boot. -- Charles Curley /"\ ASCII Ribbon Campaign Looking for fine software \ / Respect for open standards and/or writing? X No HTML/RTF in email http://www.charlescurley.com / \ No M$ Word docs in email Key fingerprint = CE5C 6645 A45A 64E4 94C0 809C FFF6 4C48 4ECD DFDB
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