i have the same problem under Xubuntu 14.04 and a brandnew HP Zbook 14.
At system boot my external vga screen was detected correctly and a few seconds after Xubuntu-XFCE-Login the external screen isn't available. At a few seconds i have seen the correct XFCE-desktop through the login process.
Here is my syslog-entry if i plug out an plug in the external vga-monitor:
[drm:intel_dp_aux_native_read] *ERROR* too many retries, giving up
Hallo,
i have the same problem under Xubuntu 14.04 and a brandnew HP Zbook 14.
At system boot my external vga screen was detected correctly and a few seconds after Xubuntu-XFCE-Login the external screen isn't available. At a few seconds i have seen the correct XFCE-desktop through the login process.
Here is my syslog-entry if i plug out an plug in the external vga-monitor: dp_aux_ native_ read] *ERROR* too many retries, giving up
[drm:intel_
The problem affects obviosly to a programming bug. See here: https:/ /bugs.freedeskt op.org/ attachment. cgi?id= 93781 (Patch Intel i915).