| Summary: | [BSW]DP monitor unable to light up after boot with edp + DP together | ||||||
|---|---|---|---|---|---|---|---|
| Product: | DRI | Reporter: | Guo Jinxian <jinxianx.guo> | ||||
| 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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Please include the Board Fab number, i.e. Fab2 201/202 or Fab1 101/102, the SoC stepping, and whether the board has been reworked. (In reply to Sean V Kelley from comment #1) > Please include the Board Fab number, i.e. Fab2 201/202 or Fab1 101/102, the > SoC stepping, and whether the board has been reworked. The the Board Fab number is Fab1 102, the cpu stepping is 2, the board has been reworked. Test on both BSW RVP FAB1 and FAB2 board, with latest drm-intel-nightly branch kernel: 2014_10_24/drm-intel-nightly/6f628cbf2f18ac47e8afad50e3c328bbc33754d2 The steps to reproduce are: 1. Shutdown machine, and connect DP and EDP panel 2. power on and observe 3. after start kernel: only edp has signal, DP monitor no display. My finding.
if (boot OS with DP) {
DP doesn't work
}
else if (boot OS without DP) {
if (console switch to login screen){
DP works once plugged in
}
if (console stay on the log screen){
DP doesn't work, unless switch VT manually (ctrl+alt+F2~)
}
}
DP issue has been fixed, after verified latest (2014-10-30)-nightly branch kernel: Kernel: (drm-intel-nightly)bd21cf795cf5dc278f1451d0f7a597cb1d13c2ba when edp+ DP connected, and boot up system, DP is working. Closing old verified. |
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Created attachment 107687 [details] dmesg ==System Environment== -------------------------- Regression: Not sure. We will further investigate it later. Non-working platforms: BSW ==kernel== -------------------------- origin/drm-intel-nightly: ea4bec8e96ea8b33b49a7892c1c7f20041a56da6(fails) drm-intel-nightly: 2014y-10m-09d-07h-58m-45s UTC integration manifest origin/drm-intel-next-queued: a128efeaa64609a9672b51bb37bb703e1b0f0128(fails) drm/i915: Suppress no action noise from oom shrinker origin/drm-intel-fixes: bfe01a5ba2490f299e1d2d5508cbbbadd897bbe9(fails) Linux 3.17 ==Bug detailed description== DP monitor unable to light up after boot. The monitor unable to detect by testdisplay or xrandr. ==Reproduce steps== ---------------------------- 1. Plug DP monitor 2. Boot