201408-15387 Dell Latitude E7250, a Broadwell-U UMA system [8086:1616]
With kittyhawk 2.0 image (3.19.0-26 #27), I can reproduce the following issues:
1. Normal <-> 180 display rotation, it would cause black screen.
2. VT switch, the screen will flick and the *ERROR* message could be found in dmesg
3. Resume from S3, you can see the screen before suspend, and GPU hang error message could be found in dmesg
However, I can't 100% reproduce the HDMI hot plug issue. Only 1 out of 10.
Test result:
With the kernel provided in #4 (tested with 3.19.0-26-generic_3.19.0-26.27+bpo0.2_amd64), all these issues are gone (HDMI hot plug works as expected too).
But:
* Call trace for i915_bpo could be found on boot in dmesg output
* Call trace for i915_bpo could be found after connecting the HDMI cable
* Call trace for i915_bpo could be found after connecting the DP cable
* HDMI audio and DP audio are not working
201408-15387 Dell Latitude E7250, a Broadwell-U UMA system [8086:1616]
With kittyhawk 2.0 image (3.19.0-26 #27), I can reproduce the following issues:
1. Normal <-> 180 display rotation, it would cause black screen.
2. VT switch, the screen will flick and the *ERROR* message could be found in dmesg
3. Resume from S3, you can see the screen before suspend, and GPU hang error message could be found in dmesg
However, I can't 100% reproduce the HDMI hot plug issue. Only 1 out of 10.
Test result: 26-generic_ 3.19.0- 26.27+bpo0. 2_amd64) , all these issues are gone (HDMI hot plug works as expected too).
With the kernel provided in #4 (tested with 3.19.0-
But:
* Call trace for i915_bpo could be found on boot in dmesg output
* Call trace for i915_bpo could be found after connecting the HDMI cable
* Call trace for i915_bpo could be found after connecting the DP cable
* HDMI audio and DP audio are not working
Please find the attachment for the detailed logs.
For more information about the test cases, please refer to this private test report: /certification. canonical. com/hardware/ 201408- 15387/submissio n/105457/
https:/