| 2014-12-24 02:04:15 |
Anthony Wong |
bug |
|
|
added bug |
| 2014-12-24 02:04:15 |
Anthony Wong |
attachment added |
|
screenshot of the issue https://bugs.launchpad.net/bugs/1405325/+attachment/4286777/+files/IMG_20141208_141739.jpg |
|
| 2014-12-24 02:06:29 |
Anthony Wong |
attachment added |
|
video showing the bug https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1405325/+attachment/4286778/+files/VID_20141208_151505.mp4 |
|
| 2014-12-24 02:07:12 |
Anthony Wong |
nominated for series |
|
Ubuntu Trusty |
|
| 2014-12-24 02:10:46 |
Anthony Wong |
summary |
Split screen after setting the monitors configuration to extended |
[I+N] Split screen after setting the monitors configuration to extended |
|
| 2014-12-24 02:11:26 |
Anthony Wong |
attachment added |
|
lspci https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1405325/+attachment/4286779/+files/lspcivnn.log |
|
| 2014-12-24 02:12:17 |
Anthony Wong |
description |
Steps:
1. Install image and log in to system
2. Connect an external DP monitor.
3. Press the display hot key to change the monitors configuration
Actual result:
Split screen after set the monitors configuration to extended mode.
Expected result:
The video signal can be mirrored, extended, displayed on external or onboard only. |
Steps:
1. Install image and log in to system
2. Connect an external DP monitor.
3. Press the display hot key to change the monitors configuration
Actual result:
Split screen after set the monitors configuration to extended mode.
Expected result:
The video signal can be mirrored, extended, displayed on external or onboard only.
[Analysis from NVIDIA]
I tracked down the culprit to an Ubuntu patch applied to xf86-video-intel 2.99.910: patches/10-handle-rotated-slaves.diff. That patch is a cherry-pick of upstream commit a45b2ea11c15f35c36330ff27cb45854a29c2e2c. The Ubuntu version of the patch is significantly different from the upstream commit, so somebody must have done quite a bit of porting. Either they messed it up during porting, or they missed cherry-picking another upstream commit that fixes the problem.
It looks like what's happening is that the Intel driver is applying the RandR CRTC offset even though it's actually scanning out from a CRTC-sized private scanout buffer. Since it's a linear buffer, this shifts all of the lines over by however many pixels the CRTC offset is set to, wrapping lines around in the process. |
|
| 2014-12-24 02:13:10 |
Anthony Wong |
description |
Steps:
1. Install image and log in to system
2. Connect an external DP monitor.
3. Press the display hot key to change the monitors configuration
Actual result:
Split screen after set the monitors configuration to extended mode.
Expected result:
The video signal can be mirrored, extended, displayed on external or onboard only.
[Analysis from NVIDIA]
I tracked down the culprit to an Ubuntu patch applied to xf86-video-intel 2.99.910: patches/10-handle-rotated-slaves.diff. That patch is a cherry-pick of upstream commit a45b2ea11c15f35c36330ff27cb45854a29c2e2c. The Ubuntu version of the patch is significantly different from the upstream commit, so somebody must have done quite a bit of porting. Either they messed it up during porting, or they missed cherry-picking another upstream commit that fixes the problem.
It looks like what's happening is that the Intel driver is applying the RandR CRTC offset even though it's actually scanning out from a CRTC-sized private scanout buffer. Since it's a linear buffer, this shifts all of the lines over by however many pixels the CRTC offset is set to, wrapping lines around in the process. |
Steps:
1. Install trusty image and log in to system
2. Connect an external DP monitor.
3. Press the display hot key to change the monitors configuration
Actual result:
Split screen after set the monitors configuration to extended mode.
Expected result:
The video signal can be mirrored, extended, displayed on external or onboard only.
[Analysis from NVIDIA]
I tracked down the culprit to an Ubuntu patch applied to xf86-video-intel 2.99.910: patches/10-handle-rotated-slaves.diff. That patch is a cherry-pick of upstream commit a45b2ea11c15f35c36330ff27cb45854a29c2e2c. The Ubuntu version of the patch is significantly different from the upstream commit, so somebody must have done quite a bit of porting. Either they messed it up during porting, or they missed cherry-picking another upstream commit that fixes the problem.
It looks like what's happening is that the Intel driver is applying the RandR CRTC offset even though it's actually scanning out from a CRTC-sized private scanout buffer. Since it's a linear buffer, this shifts all of the lines over by however many pixels the CRTC offset is set to, wrapping lines around in the process. |
|
| 2014-12-24 02:30:25 |
Anthony Wong |
bug task added |
|
xserver-xorg-video-intel (Ubuntu) |
|
| 2014-12-24 02:30:33 |
Anthony Wong |
xserver-xorg-video-intel (Ubuntu): importance |
Undecided |
High |
|
| 2014-12-24 02:30:39 |
Anthony Wong |
bug task deleted |
xorg-server (Ubuntu) |
|
|
| 2014-12-24 02:31:24 |
Anthony Wong |
bug |
|
|
added subscriber Canonical Hardware Enablement Team |
| 2014-12-24 02:32:15 |
Anthony Wong |
hwe-next: importance |
Undecided |
High |
|
| 2014-12-24 02:32:20 |
Anthony Wong |
hwe-next: status |
New |
Triaged |
|
| 2015-01-06 02:26:40 |
Justin Paupore |
bug |
|
|
added subscriber Justin Paupore |
| 2015-01-06 05:23:20 |
Yu Ning |
bug |
|
|
added subscriber Yu Ning |
| 2015-01-08 08:51:59 |
Anthony Wong |
xserver-xorg-video-intel (Ubuntu): assignee |
|
Maarten Lankhorst (mlankhorst) |
|
| 2015-01-08 11:16:42 |
Taihsiang Ho |
bug |
|
|
added subscriber tai271828 |
| 2015-01-08 12:31:40 |
Ara Pulido |
bug task added |
|
xserver-xorg-video-intel (Ubuntu Trusty) |
|
| 2015-01-08 14:15:41 |
Anthony Wong |
xserver-xorg-video-intel (Ubuntu Trusty): assignee |
|
Maarten Lankhorst (mlankhorst) |
|
| 2015-01-08 14:15:45 |
Anthony Wong |
xserver-xorg-video-intel (Ubuntu Trusty): importance |
Undecided |
High |
|
| 2015-01-13 10:22:00 |
Maarten Lankhorst |
attachment added |
|
patch https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1405325/+attachment/4297178/+files/patch |
|
| 2015-01-13 10:22:35 |
Maarten Lankhorst |
xserver-xorg-video-intel (Ubuntu): status |
New |
Invalid |
|
| 2015-01-13 10:25:37 |
Maarten Lankhorst |
tags |
|
regression-update |
|
| 2015-01-13 10:25:46 |
Maarten Lankhorst |
tags |
regression-update |
regression-update trusty |
|
| 2015-01-13 11:52:58 |
Maarten Lankhorst |
xserver-xorg-video-intel (Ubuntu Trusty): status |
New |
Incomplete |
|
| 2015-01-13 13:07:52 |
Anthony Wong |
nominated for series |
|
hwe-next/trusty |
|
| 2015-01-13 13:07:52 |
Anthony Wong |
bug task added |
|
hwe-next/trusty |
|
| 2015-01-13 13:08:00 |
Anthony Wong |
hwe-next: status |
Triaged |
Invalid |
|
| 2015-01-14 18:13:25 |
Chris J Arges |
xserver-xorg-video-intel (Ubuntu Trusty): status |
Incomplete |
Fix Committed |
|
| 2015-01-14 18:13:28 |
Chris J Arges |
bug |
|
|
added subscriber Ubuntu Stable Release Updates Team |
| 2015-01-14 18:13:30 |
Chris J Arges |
bug |
|
|
added subscriber SRU Verification |
| 2015-01-14 18:13:35 |
Chris J Arges |
tags |
regression-update trusty |
regression-update trusty verification-needed |
|
| 2015-01-16 07:44:54 |
Madper Xie |
attachment added |
|
reproduce.png https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1405325/+attachment/4299770/+files/reproduce.png |
|
| 2015-01-16 07:45:22 |
Madper Xie |
tags |
regression-update trusty verification-needed |
regression-update trusty verification-done |
|
| 2015-01-16 09:03:30 |
Anthony Wong |
hwe-next/trusty: status |
New |
Fix Committed |
|
| 2015-02-09 04:14:55 |
Launchpad Janitor |
xserver-xorg-video-intel (Ubuntu Trusty): status |
Fix Committed |
Fix Released |
|
| 2015-02-09 04:15:14 |
Adam Conrad |
removed subscriber Ubuntu Stable Release Updates Team |
|
|
|
| 2015-02-09 04:55:07 |
Anthony Wong |
hwe-next/trusty: status |
Fix Committed |
Fix Released |
|
