On Wed, May 9, 2012 at 9:40 AM, Alex Deucher alexdeucher@gmail.com wrote:
On Fri, May 4, 2012 at 11:06 AM, j.glisse@gmail.com wrote:
From: Jerome Glisse jglisse@redhat.com
It seems imac pannel doesn't like whe we change the hot plug setup and then refuse to work. This help but doesn't fully fix: https://bugzilla.redhat.com/show_bug.cgi?id=726143
How does it help? Does it fix the the aux problems, but the monitor still doesn't train? What's the working value of the relevant DC_HPD*_CONTROL register?
Alex
Don't have the hw but somehow the way we program this reg completely disable the panel, after that the panel doesn't answer to anything (nor i2c nor any aux transaction). Without programming that link training is successfull but panel stays black. I can ask to get the value before and after.
Cheers, Jerome