<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - [snb efi gmux] imac 12,1 blank screen upon booting" href="https://bugs.freedesktop.org/show_bug.cgi?id=59431#c44">Comment # 44</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - [snb efi gmux] imac 12,1 blank screen upon booting" href="https://bugs.freedesktop.org/show_bug.cgi?id=59431">bug 59431</a> from <a class="email" href="mailto:kc@cobradevil.org" title="William <kc@cobradevil.org>"> William</a> <pre>(In reply to <a href="show_bug.cgi?id=59431#c43">comment #43</a>) > I'm not sure how much more help I can be. I'm not really familiar with macs > at all other than the fact they they are always a lot of trouble ;) Now > that the efi gop stuff is sorted out, you might try removing the > gfxpayload=keep from your grub config and see if that helps. Thank you Seth and Alex for helping me out here. Ok, i have removed the gfxpayload=keep option but the console on a 32bit kernel stays black. So there seems to be some differences between 64bit kernel and the 32bit kernel when initializing the graphics hardware. Could i turn on some debugging for both the intel and the readeon drm driver which could help identify these initialization issues?</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>