2016-04-02 15:08 GMT+01:00 Oskar Berggren <oskar.berggren@xxxxxxxxx>:
Now I've also got access to a Dell Precision Tower 3620. Being a tower, this of course has no internal panel. Connecting one external monitor seems to work, but again I've not used it extensively. The second I connect a second monitor it freezes completely. Booting with two monitors connected also doesn't work. This is with updated Fedora 23 and distribution kernel 4.4.6-300 (waiting for download/build of drm-intel-nigthly to finish). CPU is i7-6700 stepping 3 microcode 0x74.First I tested on laptop Dell XPS 15 9550 with QHD display. Seems to work fine with internal panel, though I haven't used it extensively. Immediately or sometimes within a minute or two when I connect an external monitor using HDMI the system freezes completely (ping reply stops). This is with updated Fedora 23 with kernel from drm-intel-nigthly tested several times during the last two months. I've reported this here: https://bugs.freedesktop.org/show_bug.cgi?id=94625 with more details.Hi,After trying two different machines I'm beginning to feel like Skylake is completely unusable with multiple monitors connected. Is this a known limitation? Am I the only one experiencing this?
More testing:
It turns out both systems are reasonably stable using Fedora's 4.4.6-300 kernel - on HDMI and DP _without _ MST. This is what caused the problem - my DELL U2415 monitor with DP 1.2 enabled causes stability issues, system freeezes, or is not detected at all, on 4.4.6 and drm-intel-nightly. HDMI or DP 1.1 seems to work.
However, drm-intel-nightly from last night is still very unstable with HDMI on the laptop, and also with DP 1.1 for external monitors on the tower system.
/Oskar
_______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
