Re: Linux 3.16-rc1: drm:intel_dp_start_link_train *ERROR* too many full retries, give up

[Oliver Hartkopp <socketcan@hartkopp.net>]

Hello Daniel,

thanks for your fast reply.

I started the system with drm.debug=0xe with the same effect - therefore I was
not able to log in %-(

Btw. when starting into single user mode, I was able to say 'xinit' which
produced the borderless xterm at the top left position. So obviously the
display is working. Running lightdm from the console in single user mode does
not work (dbus missing?). Starting lightdm a second time kills the console.

I think I need to dig into the lightdm and startup stuff.
So this might not be an i915 issue. Sorry for the noise.

I'll send an update if I discover any new info ...

Thanks for your support so far,
Oliver

On 16.06.2014 23:47, Daniel Vetter wrote:
> On Mon, Jun 16, 2014 at 10:08 PM, Oliver Hartkopp
> <socketcan@hartkopp.net> wrote:
>> Hey all,
>>
>> with my Debian unstable the upgrade from 3.15 to 3.16-rc1 failed with this fancy
>> [drm:intel_dp_start_link_train *ERROR* too many full retries, give up] message loop.
> 
> This message in dmesg and
> 
>> lightdm/XFCE4 doesn't start anymore (it tries several times but fails always).
> 
> xfce not starting shouldn't be related. Are you sure xfce isn't
> starting and that it's not just a black screen, but otherwise working
> X?
> 
> Please attach complete dmesg with drm.debug=0xe added to your kernel
> cmdline and Xorg.log.
> 
> Thanks, Daniel
> 
>> Hm - I just found this stuff in my stock Debian Kernel too:
>> 3.14-1-686-pae #1 SMP Debian 3.14.5-1 (2014-06-05) i686 GNU/Linux
>>
>>
>> [    6.461232] [drm:intel_dp_start_link_train] *ERROR* too many full retries, give up
>> [    6.873772] dell_wmi: Received unknown WMI event (0x11)
>> [    6.884336] Console: switching to colour frame buffer device 240x67
>> [    6.948511] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
>> [    6.948513] i915 0000:00:02.0: registered panic notifier
>>
>> [    7.430429] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
>>
>> But at least it starts with the 3.14 (any the latest 3.15).
>>
>> I have a Intel(R) Core(TM) i7 CPU M 640  @ 2.80GHz with Intel HD graphics.
>>
>> Any idea?
>>
>> Regards,
>> Oliver
> 
> 
>