No HDMI output when frieza is connected to a Dell monitor

[Victor gonzalez]

Environment:

current build number: 75
device name: frieza_arm64
channel: ubuntu-touch/staging/ubuntu
last update: 2016-11-04 10:44:56
version version: 75
version ubuntu: 20161104
version device: 20161014.0
version custom: 20161104

Steps to reproduce:

1º Connect hdmi cable to my dell monitor
2º Select hdmi port

Current result: I get a black screen with my dell monitor but it works correctly on a Lg tv
Expected result: dell monitor should display tablet screen

[Daniel van Vugt (vanvugt)]

Can you please copy (as root):

  /var/log/lightdm/unity-system-compositor.log*
  ~/.cache/upstart/unity8.log

and attach them here?

That should show attempts to reconfigure displays (if Mir is being notified at all)

[Victor gonzalez (victor-gonzalez-0)]

Hi, please find attached logs requested. Time stamp: 7:37/38

[Daniel van Vugt (vanvugt)]

Sorry, I can't tell, but is the 1920x1080 display the LG TV or the Dell monitor?

[2016-11-07 07:39:10.297720] mirserver: New display configuration:
[2016-11-07 07:39:10.300954] mirserver: 0.1: LVDS 10.0" 135x216mm
[2016-11-07 07:39:10.301068] mirserver: Current mode 1200x1920 56.90Hz
[2016-11-07 07:39:10.301108] mirserver: Preferred mode 1200x1920 56.90Hz
[2016-11-07 07:39:10.301141] mirserver: Logical position +0+0
[2016-11-07 07:39:10.304144] mirserver: 0.2: DisplayPort 9.2" 203x114mm
[2016-11-07 07:39:10.304251] mirserver: Current mode 1920x1080 0.60Hz
[2016-11-07 07:39:10.304293] mirserver: Preferred mode 1920x1080 0.60Hz
[2016-11-07 07:39:10.304326] mirserver: Logical position +1200+0
[2016-11-07 07:39:10.304359] mirserver: 0.3: unused (null)
...
[2016-11-07 07:39:34.941282] mirserver: New display configuration:
[2016-11-07 07:39:34.946373] mirserver: 0.1: LVDS 10.0" 135x216mm
[2016-11-07 07:39:34.946473] mirserver: Current mode 1200x1920 56.90Hz
[2016-11-07 07:39:34.946634] mirserver: Preferred mode 1200x1920 56.90Hz
[2016-11-07 07:39:34.946670] mirserver: Logical position +0+0
[2016-11-07 07:39:34.946703] mirserver: 0.2: unused DisplayPort
[2016-11-07 07:39:34.946734] mirserver: 0.3: unused (null)

If that's the TV then it seems your monitor isn't ever being detected at all by the kernel/HWC drivers.

[Victor gonzalez (victor-gonzalez-0)]

Hi,

I tried to connect to my dell monitor this time(the LG tv works fine)

[Daniel van Vugt (vanvugt)]

The Android platform was deleted from lp:mir at revision 4155.