[Bug 60643] [i915] black screen at boot

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=60643

--- Comment #26 from MDBürkle <dominik.buerkle at web.de> ---
(In reply to Jani Nikula from comment #25)
> more convenient to read plain text attachments directly in the browser

I'll keep that in mind.
Just bothered about the space required for two dozen dmesg files and
"script.log" files being recognized as binary files anyway...


(In reply to Jani Nikula from comment #24)
> (In reply to MDBürkle from comment #3)
> > Created attachment 107129 [details]
> 
> (In reply to MDBürkle from comment #22)
> > consoles are visible and fully usable if .config option
> > "# CONFIG_DRM_I915_KMS not set" turned on via (options i915 modeset=1).
> 
> Is this in reference to comment #3 quoted above? From the dmesg, i915 does
> not get loaded at all.

Huh? or oops! Usually, i915 gets loaded automatically within the Gentoo boot
process with a msg like "letting udev process events", which denotes the time
when the console gets invisible or not... don't know what happened there. There
might be more dmesg files without i915 lines, at least locally there are more.


> (CONFIG_DRM_I915_KMS=n leaves out MODULE_DEVICE_TABLE
> in the driver.) So this does not bring us any new information.

MODULE_DEVICE_TABLE sounds like info about which devices are supported by the
module. Bad naming then, if this is solely a table for KMS, I wonder.


> > I upgraded my X configuration to run with and without fglrx, meanwhile.
> 
> Does your X work without fglrx, with CONFIG_DRM_I915_KMS=y? If it's
> CONFIG_DRM_I915_KMS=n, it's also not interesting.

I run modules with CONFIG_DRM_I915_KMS=y only for testing as I want to see what
happens during fsck, just in case...
My X configuration should work with either type of i915 modules.
I just built the module with ...KMS=y and am preparing for reboot. I expect
having to press Fn+BrightnessUp to make the gdm login screen visible. :-/


> > What else can I do to provide needed informations?
> 
> Have you ever had working output with i915 KMS only? Have you looked at your
> BIOS GPU settings?

There are no GPU settings in the BIOS (never in any version I had installed).
However, I'll do a BIOS update (have to boot Windoof for that) these days, too
- provided availability.

I'm unsure about "working output" with i915 KMS=y - I don't remember having a
working console with KMS=y, must have been long ago.
I'll check which versions of Linux kernels I ran in [most of] the lifetime of
this computer, then I can think about testing (some) old kernels (again).

Kind regards

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