[Bug 44755] Garbled display on external screen when using 1920x1080 instead of 1920x1200

https://bugs.freedesktop.org/show_bug.cgi?id=44755 Christopher M. Penalver changed: What|Removed |Added Status|NEW

[Bug 44755] Garbled display on external screen when using 1920x1080 instead of 1920x1200

https://bugs.freedesktop.org/show_bug.cgi?id=44755 --- Comment #10 from Florian Mickler flor...@mickler.org 2012-03-12 15:21:47 PDT --- A patch referencing this bug report has been merged in Linux v3.3-rc7: commit 38aa4a568ba4c3ccba83e862a01e3e60e3b811ee Author: Alex Deucher

[Bug 44755] Garbled display on external screen when using 1920x1080 instead of 1920x1200

https://bugs.freedesktop.org/show_bug.cgi?id=44755 --- Comment #8 from the...@gmail.com 2012-03-07 14:45:11 PST --- I've tested against a kernel with this patch, as well as mainline kernel (both built by ubuntu kernel team), and am still seeing the same behavior. So seems like this change

[Bug 44755] Garbled display on external screen when using 1920x1080 instead of 1920x1200

https://bugs.freedesktop.org/show_bug.cgi?id=44755 --- Comment #9 from Alex Deucher ag...@yahoo.com 2012-03-07 16:03:51 PST --- Created attachment 58148 -- https://bugs.freedesktop.org/attachment.cgi?id=58148 fix This patch should fix it. Your chip is limited to 165 Mhz single link tmds. The

[Bug 44755] Garbled display on external screen when using 1920x1080 instead of 1920x1200

https://bugs.freedesktop.org/show_bug.cgi?id=44755 --- Comment #7 from Florian Mickler flor...@mickler.org 2012-02-01 13:09:58 PST --- A patch referencing this bug report has been merged in Linux v3.3-rc2: commit 9aa59993e226af94088adaee993eb8cfd33ae295 Author: Alex Deucher

[Bug 44755] Garbled display on external screen when using 1920x1080 instead of 1920x1200

https://bugs.freedesktop.org/show_bug.cgi?id=44755 --- Comment #1 from Bryce Harrington br...@canonical.com 2012-01-13 06:50:09 PST --- Created attachment 55541 -- https://bugs.freedesktop.org/attachment.cgi?id=55541 BootDmesg.txt -- Configure bugmail:

[Bug 44755] Garbled display on external screen when using 1920x1080 instead of 1920x1200

https://bugs.freedesktop.org/show_bug.cgi?id=44755 --- Comment #2 from Bryce Harrington br...@canonical.com 2012-01-13 06:50:57 PST --- Created attachment 55542 -- https://bugs.freedesktop.org/attachment.cgi?id=55542 CurrentDmesg.txt -- Configure bugmail:

[Bug 44755] Garbled display on external screen when using 1920x1080 instead of 1920x1200

https://bugs.freedesktop.org/show_bug.cgi?id=44755 --- Comment #3 from Bryce Harrington br...@canonical.com 2012-01-13 06:51:27 PST --- Created attachment 55543 -- https://bugs.freedesktop.org/attachment.cgi?id=55543 XorgLog.txt -- Configure bugmail:

[Bug 44755] Garbled display on external screen when using 1920x1080 instead of 1920x1200

https://bugs.freedesktop.org/show_bug.cgi?id=44755 the...@gmail.com changed: What|Removed |Added CC||the...@gmail.com -- Configure

[Bug 44755] Garbled display on external screen when using 1920x1080 instead of 1920x1200

https://bugs.freedesktop.org/show_bug.cgi?id=44755 --- Comment #4 from Alex Deucher ag...@yahoo.com 2012-01-13 08:25:54 PST --- The problem is the modeline from your monitor for the 1920x1080 mode is greater than 165 Mhz which is the current cut off for single link mode in the driver: (II)

[Bug 44755] Garbled display on external screen when using 1920x1080 instead of 1920x1200

https://bugs.freedesktop.org/show_bug.cgi?id=44755 --- Comment #5 from Alex Deucher ag...@yahoo.com 2012-01-13 08:34:21 UTC --- Created attachment 7 -- https://bugs.freedesktop.org/attachment.cgi?id=7 possible fix This patch against drm-next or Linus git should fix the issue. --

[Bug 44755] Garbled display on external screen when using 1920x1080 instead of 1920x1200

https://bugs.freedesktop.org/show_bug.cgi?id=44755 --- Comment #6 from the...@gmail.com 2012-01-13 08:53:54 PST --- confirmed that the following sequence displays a non-garbled 1920x1080 display on the external monitor: # xrandr --newmode 1920x1080R 138.50 1920 1968 2000 2080 1080 1083 1088