https://bugs.freedesktop.org/show_bug.cgi?id=39882

Summary: Regression: Plugging in a HDMI connector makes the LCD of X120e go dark Product: DRI Version: XOrg CVS Platform: x86-64 (AMD64) OS/Version: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/Radeon AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: gottfried.haider@gmail.com

When I plug in my external TFT monitor while my X120e is in use, the laptop's internal LCD immediately goes dark - yet I don't have a picture on the TFT.

I first noticed this with kernel 3.0.0, this is fully reproducible also on 3.0.1. Since I did not remember this happening before, I tested with an older kernel (Ubuntu's 2.6.38, but should not make a difference), and indeed: with 2.6.38 the internal LCD stays on (which is the expected behavior).

The TFT is connected via a HDMI-to-DVI cable. Userspace is Xubuntu 11.04 with xorg-edgers PPA.

At a first glance, I do not see anything interesting in either dmesg or Xorg.log when this happens. Note: the machine does not hang, since I can still (blindly) launch a terminal and make the machine restart - for which I briefly get a picture on the LCD again after XOrg shutdown.

I am attaching lspci and a dmesg/Xorg.log below - please let me know if I can help with anything else (I can easily test kernel patches).