On Sun, 2012-07-29 at 01:42 +0100, David Woodhouse wrote: > If I don't hack it to switch the mux to IGD at boot time, I never manage > to get a sane picture out of the Intel device after switching to it. > It's late now, but I'll try to get a proper debug log of the working and > failing cases tomorrow.
From the hacked kernel (after fixing vga_switcheroo_enable() not to do:
event.info = client->fb_info;
fb_notifier_call_chain(FB_EVENT_REMAP_ALL_CONSOLE, &event);
if client->fb_info is NULL)...
http://david.woodhou.se/dmesg-boot-to-IGD (blank screen)
http://david.woodhou.se/dmesg-boot-to-IGD-and-switch-to-DIS (works)
http://david.woodhou.se/dmesg-boot-to-IGD-and-switch-to-DIS-and-back-to-IGD
(works)
Without switching to IGD at startup...
http://david.woodhou.se/dmesg-boot-to-DIS (works)
http://david.woodhou.se/dmesg-boot-to-DIS-then-switch-to-IGD (blank)
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dwmw2
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