Re: [Intel-gfx] [BUG] HDMI 12bpc causing occasional flickering and blanking

2016-02-24 Thread Tore Anderson
Hi Ville, > Well, just to check the details of your particular cable/dongle, > maybe you can post the dmesg with drm.debug=0xe with my branch? > Or at least the parts that refer to DP dual mode adaptors. Here: http://filebin.net/gd91wnltky/dmesg.4.5.0-rc4-g32fa589.txt I'm assuming the most impor

Re: [Intel-gfx] [BUG] HDMI 12bpc causing occasional flickering and blanking

2016-02-23 Thread Tore Anderson
Hi Ville, > "The monitor is connected with a DP+-to-HDMI cable" > This and some reading of the DP dual mode spec gave me another idea; > The DP->HDMI adaptor may simply be degrading the signal quality too > much. According to the DP dual mode spec we're supposed to limit the > TMDS clock based on

Re: [Intel-gfx] [BUG] HDMI 12bpc causing occasional flickering and blanking

2016-02-19 Thread Tore Anderson
* Tore Anderson > * Ville Syrjälä > > > Could you test the following hack while using a 1920x1080 mode with > > 148.5 MHz dotclock, and see if there's any improvement? > > I think it might be an improvement, that is, the blanking/flickers > seems to occur les

Re: [Intel-gfx] [BUG] HDMI 12bpc causing occasional flickering and blanking

2016-02-15 Thread Tore Anderson
* Ville Syrjälä > Could you test the following hack while using a 1920x1080 mode with > 148.5 MHz dotclock, and see if there's any improvement? I think it might be an improvement, that is, the blanking/flickers seems to occur less often than it did with 8ed1804, but it is not completely fixed. I'

[Intel-gfx] [BUG] HDMI 12bpc causing occasional flickering and blanking

2016-02-15 Thread Tore Anderson
Hello, Since upgrading to the Fedora 4.3 kernel package, the picture on my the BenQ M2700 HD monitor I've got connected to my HP EliteBook Folio 9470m laptop began having issues. The monitor is connected with a DP+-to-HDMI cable (HDMI in the monitor end), and the resolution I'm using is 1920x1080.