| Bug ID | 86861 |
|---|---|
| Summary | [rv6xx] When using a hardware KVM switch between computers EDID sometimes not detected/display goes fuzzy |
| Product | DRI |
| Version | XOrg git |
| Hardware | Other |
| OS | All |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | DRM/Radeon |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | shawn.starr@rogers.com |
kernel: 3.17.2-300.fc21.x86_6 I've noticed sometimes when using my KVM Switch when switching to the laptop. I get fuzzy text in console w/ KMS on. if I start X, the fuzzy display continues, a full reboot resets the display properly. Caught an error this time (maybe just as it was about to detect the EDID of display) [ 5877.852952] [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 130 [ 5877.860547] Raw EDID: [ 5877.862264] 00 ff ff ff ff ff ff 00 ff ff ff ff ff ff ff ff [ 5877.865817] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 5877.867201] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 5877.870127] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 5877.871706] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 5877.874040] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 5877.875309] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 5877.876593] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 5877.880376] [drm:radeon_vga_detect] *ERROR* VGA-1: probed a monitor but no|invalid EDID KVM switch model: ATEN CS-1734A (Firmware: V4.2.417 not upgraded since purchase) The actual EDID of the display (from Xorg log): [ 416.432] (II) RADEON(0): EDID (in hex): [ 416.432] (II) RADEON(0): 00ffffffffffff00320c00f200000000 [ 416.432] (II) RADEON(0): 0011010380211578eaba709859528c28 [ 416.432] (II) RADEON(0): 2550542108008180a940010101010101 [ 416.432] (II) RADEON(0): 010101010101e33a805a70b032401e1e [ 416.432] (II) RADEON(0): 13004bcf100000190000000000000000 [ 416.432] (II) RADEON(0): 00000000000000000000000000fe0058 [ 416.432] (II) RADEON(0): 55333031043135345755310a000000fe [ 416.432] (II) RADEON(0): 00283e4c53739bbaff02010a202000aa
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