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,

just to close my request:

The latest git pull from Linus' tree fixed my issue.

vmlinuz-3.16.0-rc2-00211-gd7933ab (26.6. 21:19) was bad
vmlinuz-3.16.0-rc2-00319-g3e7b256 (28.6. 09:23) works again

There are two pulls with 'drm-fixes' and 'x86/urgent' in this area.
Don't know what it was in detail - but it's fixed now (lightdm/xfce4 runs).

Thanks,
Oliver


On 17.06.2014 20:38, Oliver Hartkopp wrote:
> 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
>>
>>
>>