| Summary: | [BSW] HDMI screen becomes black after resuming from S3/S4 | ||||||||||
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| Product: | DRI | Reporter: | Jeff Zheng <jeff.zheng> | ||||||||
| Component: | DRM/Intel | Assignee: | Intel GFX Bugs mailing list <intel-gfx-bugs> | ||||||||
| Status: | CLOSED FIXED | QA Contact: | Intel GFX Bugs mailing list <intel-gfx-bugs> | ||||||||
| Severity: | critical | ||||||||||
| Priority: | high | CC: | intel-gfx-bugs | ||||||||
| Version: | unspecified | ||||||||||
| Hardware: | Other | ||||||||||
| OS: | All | ||||||||||
| Whiteboard: | |||||||||||
| i915 platform: | i915 features: | ||||||||||
| Attachments: |
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Created attachment 112191 [details]
testdisplay -i output after resume
Created attachment 112863 [details] [review] patch for test What happens with attached patch applied? After apply the patch, the HDMI screen is still black after system resumes. This issue still exists after upgrading BIOS from V53 to V55, and whatever 'dynamic memory self refresh' enabled or disabled in BIOS does not matter. My HDMI monitor is ASUS PA238Q Exists on drm-intel-testing-2015-01-30 Tried on drm-intel-testing-2015-02-27 + "attachment 113995 [details] [review]" and this issue still exists. After upgrading processor and BIOS to V59, this issue is fixed. I tried on both drm-intel-testing-2015-03-13 and drm-intel-testing-2015-01-30 Closing old verified. |
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Created attachment 112189 [details] dmesg after resume from S3 ==System Environment== -------------------------- Regression: No. I don't find a working version. Non-working platforms: BSW Working platforms: ==kernel== -------------------------- -nightly: /823e7150631cb1059edc9c57fc4c6f8454e1700e(fails) ==Bug detailed description== ----------------------------- Boot BSW with HDMI connected, both eDP and HDMI screen show text. But after suspend and resume, only eDP shows text, HDMI screen is blank "testdisplay -a" shows normal, and if I control-C to abort, HDMI screen shows text again. ==Reproduce steps== ---------------------------- 1. Connect HDMI display to BSW and boot BSW 2. echo mem > /sys/power/state 3. Resume and check HDMI monitor