QA:Testcase Power Management video powersave stability

Description

This test case checks stability of you system aggressive power management settings enabled on your video card.

Limited audience
This test targets users with Intel, Nvidia or ATI / AMD (Radeon) video cards.

Setup

Plese select and follow the paragraph bellow regarding your video card HW:

Intel

1. Boot with the following kernel arguments (add them to grub, you can use the Tab key to edit the parameters in the boot prompt if using the Live medium):

   i915.i915_enable_rc6=4 i915.i915_enable_fbc=1 i915.semaphores=1 i915.lvds_downclock=1

Nvidia

1. Boot with the following kernel arguments (add them to grub, you can use the Tab key to edit the parameters in the boot prompt if using the Live medium):

   nouveau.perflvl_wr=7777

2. Check what performance levels are available by:

   dmesg | grep -A4 "available performance level"

3. Select the lowest available performance level by:

   echo 0 > /sys/class/drm/card0/device/performance_level

   If you have enough time you can re-test with various performance levels.

ATI / AMD (Radeon)

1. Select dynpm (for details see [1]) by:

    # echo dynpm > /sys/class/drm/card0/device/power_method

   If you have enough time you can re-test with other profiles.

How to test

1. Checks whether the video card and system works correctly for (you needn't to check all):
   • Normal desktop use cases (e.g. moving/opening/closing windows)
   • The pymol application (yum install pymol)
   • Playing GPU intensive game like openarena (yum install openarena)

Expected Results

1. Correct graphic at reasonable performance.
2. No crashes.
3. No artefacts.
4. No screen flickering.