<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - Radeon KMS fails with inaccessible AtomBIOS on systems with (U)EFI boot" href="https://bugs.freedesktop.org/show_bug.cgi?id=26891#c51">Comment # 51</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - Radeon KMS fails with inaccessible AtomBIOS on systems with (U)EFI boot" href="https://bugs.freedesktop.org/show_bug.cgi?id=26891">bug 26891</a> from <a class="email" href="mailto:anonymous@dodgeit.com" title="Anonymous Helper <anonymous@dodgeit.com>"> Anonymous Helper</a> <pre>(In reply to <a href="show_bug.cgi?id=26891#c50">comment #50</a>) > You'll need to use vga-switcheroo to select the card you want to use. Then > you should be able to start X without any config and it will start on the > one selected by vga-switcheroo. Having two device sections as your config > does will force X to try and start on both devices. I tried without the BusID but all I got was a black screen. For some reason when I switch to the intel GPU I get a black screen also, though it did work when I booted from grub-efi earlier with the well documented outb commands to disable AMD (no BIOS from EFI w/o efistub). Not sure if it's an issue with vga-switcheroo, intel driver or something else. I don't know if it's a problem, but both cards are powered on at boot. I can switch back and forth between the GPUs (though it's tricky doing so blind when on intel graphics). Any other suggestions? Thanks.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>