On Mon, Jan 25, 2016 at 09:35:26AM -0700, dann frazier wrote: > I've got a Lenovo T410 w/ an external display (DisplayPort<->HDMI). After > upgrading from a 4.2 kernel to a 4.3, I started hitting an issue where > the display thinks it has lost input for a few moments. Oddly, it > usually happens when I start typing in a terminal after a short period > of inactivity. > > I see no OS-side symptoms - there are no new messages in dmesg/syslog/Xorg > log, etc. Any fifo underrun reports in dmesg in general? > I reproduced with latest Linus master (@ 3e1e21c7b), and then > bisected down to the following commit: > > commit 7221fc333dbe1743a3dff155b03527fda90d4ec1 > Author: Matt Roper <matthew.d.roper@xxxxxxxxx> > Date: Thu Sep 24 15:53:08 2015 -0700 > > drm/i915: Eliminate usage of pipe_wm_parameters from ILK-style WM (v2) That's not in 4.3. As far as currentl Linus tree goes, you may want to try these: http://patchwork.freedesktop.org/patch/msgid/1452776015-22076-2-git-send-email-ville.syrjala@xxxxxxxxxxxxxxx http://patchwork.freedesktop.org/patch/msgid/1452776015-22076-1-git-send-email-ville.syrjala@xxxxxxxxxxxxxxx -- Ville Syrjälä Intel OTC _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx