blank screen on vanilla kernel unless nomodeset is specified

insania · n00b Joined: 18 Apr 2005 Posts: 11

Hopefully this is the correct place in the forums to post.

I roll the vanilla stable kernel (always have no really any problems i just like to). Anyway i am on kernel version 3.9.11. I have always just downloaded the new sources copied my .config over and did a 'make oldconfig'. If i upgrade to 3.10 (or newer i tired mainline as well) i get a black screen while booting (i don't boot to X and can ssh into the machine after it boots, just the framebuffer never works). the only way to get anything to display it to specify 'nomodeset' for a kernel parameter. With the 3.9 (and lower) series i get my nice 1920x1080 framebuffer (i do almost everything on the tty's), and with 3.10 and higher and nomodeset it is ugly (like 1024x768ish).

This is a Zenbook Prime UX31A with integrated Intel HD4000 graphics. I did read people saying it had to do with backlighting and acpi, but i tried with acpi=off and even compiled acpi out of the kernel. Any help would be appreciated, i would like to keep following the vanilla kernel (after all the fun about gentoo is freedom).

Thanks,

sean

eccerr0r · Posted: Tue Jul 30, 2013 3:15 pm Post subject:

Just to make it clear for anyone who knows what's going on, is it a black screen (backlight off) or blank screen (backlight on, but nothing shows up)?

I've only seen one laptop where it's the former, and doing the Fn-Brighten_display is a workaround and I could use the machine until I told the kernel to say that ACPI is lying...
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Intel Core i7 2700K/Radeon R7 250/24GB DDR3/256GB SSD
What am I supposed watching?

insania · n00b Joined: 18 Apr 2005 Posts: 11

Sorry it is a blank screen. I tried the acpi_backlight=vendor and the invert backlight (i cannot remember the syntax right now). I would think if it had anything to do with the backlight then even setting nomodeset would do no good. Plus i can use the hardware keys and turn up the backlight. Sorry i will try to edit my post topic.

sean

666threesixes666 · Posted: Tue Jul 30, 2013 4:08 pm Post subject:

i noted this behavior over a month ago. thanks for wording it, i was trying "no console linux" and everything else in google.