On Wed, Sep 24, 2014 at 11:46:40AM +0200, Harald Dunkel wrote: > On 09/24/14 07:51, Jonathan Gray wrote: > > > > Perhaps there is ghost crt output involved, could you try the following > > patch? > > > [snip] > > No improvement, unfortunately :-(.
It might be interesting to see the DRMDEBUG output then. Add "option DRMDEBUG" to your kernel config and build a new kernel, then mail me the resulting dmesg off list. You'll need rev 1.131 of drm_drv.c first otherwise it won't build. As this will add a printf for each ioctl you won't be able to use X at the same time as running the kernel. Connecting a display via a digital output should normally trigger a hotplug event via an interrupt and set everything up. Outputs are also polled on older < i945 hardware.
