[Intel-gfx] Black screen on boot with KMS and unable to start X

[Haroldo Stenger]

Scott,

I agree you should file a bug.

I'd also try attaching a CRT monitor together to the LCD notebook
monitor , to see what happens there.

best regards
haroldo

2010/3/18 Scott Silverman <ssilverman at simplexinvestments.com>:
> My kernel .config can be found here: http://paste.pocoo.org/show/191168/
>
> I have disabled uvesafb, and removed all modesetting/framebuffer
> related entries from my grub config.
> i.e.: kernel /vmlinuz26 root=/dev/disk/by-uuid/<snip> ro
>
> When I boot, I see the boot process up until the point where I believe
> the i915 module is loaded, at which point I get a black screen, though
> the backlight is still on. The kernel continues to load properly, and
> after this point I can access the machine via SSH, or blindly via the
> console.
>
> If at this point I attempt to start X, I will see the backlight flash
> off, then back on. The log for Xorg can be found herE:
> http://paste.pocoo.org/show/191171/
>
> The configuration I am using for X is here: http://paste.pocoo.org/show/191172/
>
> I can also try to start X without a config, the log for that attempt
> is here (results the same, backlight flashes, then nothing):
> http://paste.pocoo.org/show/191173/
>
> Ideally, when I boot, I will see the console, and when I startx, I
> will be able to see X.
>
> Do you think I should file a bug?
>
> Thanks,
> Scott
>
> On Thu, Mar 18, 2010 at 5:54 AM, Florian Mickler <florian at mickler.org> wrote:
>> On Wed, 17 Mar 2010 15:55:04 -0500
>> Scott Silverman <ssilverman at simplexinvestments.com> wrote:
>>
>>> I tried updating to the driver you specified (Actually, I went to 2.10.902).
>>>
>>> I still can't start X, I get:
>>>
>>> (EE) intel(0): No kernel modesetting driver detected.
>>> (EE) Screen(s) found, but none have a usable configuration.
>>>
>>> I have checked dmesg, doesn't appear to be anything interesting there.
>>>
>>> In the interest of confirming that I have a proper configuration, I changed
>>> " Driver "Intel" " to " Driver "vesa" " temporarily, X started up (thought
>>> without decorations, I didn't really bother to look into that).
>>>
>>> I am currently using the uvesafb framebuffer driver, but as soon as the i915
>>> module loads it enables modesetting and my display goes blank.
>>>
>>
>> Hi!
>>
>> please post your kernel .config.
>>
>> short summary of the kernel side:
>> 1. all kernel-graphics support is consolidated into i915 module.
>> fbcon is used by i915 to display the console. kernel mode setting is
>> needed for userspace x-driver.
>>
>> 2. all other kernel framebuffer-drivers are not to be used together with
>> the i915 module.
>>
>> if you honor those two points, you should see the kernel booting up.
>> if you don't see the kernel booting up, you should probably file a bug.
>>
>> hth,
>> Flo
>>
>