On my ASUS R2H when KMS enabled I get no output not from framebuffer on system startup, nor from X. With i915.modeset=0 output is present. I don't have an external monitor so I can't check it, but from my previous experience this kind of bugs come from driver pushing output to VGA-out instead of internal screen. Is there any option to switch the output?
Can you narrow down the regression window for us please? Was 2.6.31 OK?
Assuming it wasn't.
I should have said "assuming it was", sorry.
It never worked with KMS, and it works fine with any kernel version when modesetting is managed by xf86-video-intel.
Not a regression, then.
Sorry for calling it a regression, but is there any way to change the output for KMS-guided FB and X11?
Make sure you have CONFIG_FRAMEBUFFER_CONSOLE=y or you won't get any console output. Also, you need to have recent X drivers for KMS to work (at least xf86-video-intel 2.7 but preferably 2.10).
Running Arch Linux with default kernel and default X11 drivers. Works fine on several other laptops... $ pacman -Qs xf86-video-intel local/xf86-video-intel 2.10.0-1 (xorg-video-drivers) X.org Intel i810/i830/i915/945G/G965+ video drivers $ zgrep CONFIG_FRAMEBUFFER_CONSOLE /proc/config.gz CONFIG_FRAMEBUFFER_CONSOLE=y # CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
Tested with external monitor. Still no modes. What can I do to actually have X (as intel X driver nowdays doesn't support UMS).
Can you load your drm driver with 'debug=1' then load i915 and attach the dmesg output to this bug? Sounds like we're not finding your output correctly.
timeout.