| Summary: | DP-MST not found during bios takeover | ||||||
|---|---|---|---|---|---|---|---|
| Product: | DRI | Reporter: | Marc RECHTE <mrechte> | ||||
| Component: | DRM/Intel | Assignee: | Intel GFX Bugs mailing list <intel-gfx-bugs> | ||||
| Status: | CLOSED WORKSFORME | QA Contact: | Intel GFX Bugs mailing list <intel-gfx-bugs> | ||||
| Severity: | normal | ||||||
| Priority: | medium | CC: | intel-gfx-bugs | ||||
| Version: | unspecified | ||||||
| Hardware: | x86-64 (AMD64) | ||||||
| OS: | All | ||||||
| Whiteboard: | |||||||
| i915 platform: | HSW | i915 features: | display/DP MST | ||||
| Attachments: |
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Hmm, please try this, and attach dmesg with drm.debug=14 set. diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c index 6e4cc5334f47..bfe76bbb19a4 100644 --- a/drivers/gpu/drm/i915/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/intel_dp_mst.c @@ -540,6 +540,8 @@ intel_dp_mst_encoder_init(struct intel_digital_port *intel_dig_port, int conn_ba struct drm_device *dev = intel_dig_port->base.base.dev; int ret; + return 0; + intel_dp->can_mst = true; intel_dp->mst_mgr.cbs = &mst_cbs; Timeout, closing. Please reopen if the problem persists with latest kernels. |
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Created attachment 115909 [details] boot.log Hello, During boot sequence, one can see that i915 does not detects the 4K monitor connected on the DisplayPort whereas the kernel and Xorg do. This produces an unsightly user experience (resolution change). xorg-x11-drv-intel-2.99.916-3.20141117.fc21.x86_64