<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - Glitchy output using only HDMI on laptop with AMD Mobility Radeon HD 3450/3470" href="https://bugs.freedesktop.org/show_bug.cgi?id=75649#c6">Comment # 6</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - Glitchy output using only HDMI on laptop with AMD Mobility Radeon HD 3450/3470" href="https://bugs.freedesktop.org/show_bug.cgi?id=75649">bug 75649</a> from <a class="email" href="mailto:paul.bodenbenner@gmail.com" title="Paul Bodenbenner <paul.bodenbenner@gmail.com>"> Paul Bodenbenner</a> <pre>I get the same problems as described before with two different monitors. Using an up-to-date Arch Linux with kernel 3.14 (also tried kernel 3.15rc2) with a hd3470 card. Problem occurs only, if an external monitor is connected at resolution 1920x1080@60Hz in single mode (extended mode makes no problems). Funny enough when using 1920x1080@50Hz in single mode everything seems also fine. By switching back to Catalyst the problem doesn't occur. Found some similar threads: <a href="https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1209315">https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1209315</a> <a class="bz_bug_link bz_status_NEW " title="NEW --- - Horizontal stripes and screen flickering." href="show_bug.cgi?id=42621">https://bugs.freedesktop.org/show_bug.cgi?id=42621</a> By disabling color tiling and dpm the phenomenon appears only when switching between modes (monitors on / off). So in this case when starting the laptop with closed lid everything is ok, until switching between modes.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>