Hide Forgot
Description of problem: I updated a F16 system to a rawhide kernel to try out the HDMI ELD feature. This was working in a rawhide kernel last week but the data is now being rejected and I lose HDMI audio. Version-Release number of selected component (if applicable): Working: kernel-3.2.0-0.rc4.git5.1.fc17.x86_64 Broken: kernel-3.2.0-0.rc6.git0.1.fc17.x86_64 How reproducible: Every time Steps to Reproduce: 1. TV+AV receiver connected via HDMI to Intel GPU 2. Boot new kernel. 3. dmesg reports rejected EDID data Actual results: [ 5052.222713] Raw EDID: [ 5052.222716] 02 03 4c 73 5e 9f 14 13 12 16 11 15 10 05 04 03 [ 5052.222717] 07 02 06 01 20 21 22 0a 0b 0e 23 0f 24 19 1a 1d [ 5052.222718] 25 1e 26 38 09 7f 07 0f 7f 07 15 07 50 3e 1f c0 [ 5052.222720] 4d 02 00 57 06 00 67 54 00 5f 54 01 68 03 0c 00 [ 5052.222721] 12 00 b8 2d 0f e2 00 7f 83 5f 00 00 8c 0a d0 90 [ 5052.222722] 20 40 31 20 0c 40 55 00 b0 84 43 00 00 18 00 00 [ 5052.222723] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 5052.222725] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 72 [ 5052.222729] i915 0000:00:02.0: HDMI-A-2: Ignoring invalid EDID block 1. Expected results: EDID data should be parsed OK. Additional info: It looks like an issue with drm-edid-try-harder-to-fix-up-broken-headers.patch which has removed the check of the first byte being zero. This was previously allowing the extension block to skip the drm_edid_header_is_valid() check. For reference here is a hexdump showing the full 256 bytes from a previous time I had the raw edid logging enabled. It is the second half of this data which is being rejected: 00ffffffffffff005262090101010101 ff14010380a05a780a0dc9a057479827 12484c2fcf0081800101010101010101 010101010101023a80d072382d40102c 458040846300001e011d80d0721c1620 102c258040846300009e000000fc0054 4f53484942412d54560a2020000000fd 00174c0f510f000a2020202020200129 02034c735e9f14131216111510050403 070206012021220a0b0e230f24191a1d 251e2638097f070f7f071507503e1fc0 4d02005706006754005f540168030c00 1100b82d0fe2007f835f00008c0ad090 204031200c405500b084430000180000 00000000000000000000000000000000 00000000000000000000000000000073
Adam, any thoughts on this one?
Yeah, patch is broken. Revert from all branches, I'll send better to dri-devel@
(In reply to comment #2) > Yeah, patch is broken. Revert from all branches, I'll send better to > dri-devel@ Commented out for now. Will be in next rawhide/f16 builds.
kernel-3.2.0-0.rc6.git2.1.fc17.x86_64 works again for me.
Closing per comment #4. drm-next has this instead for the header fixup, which will make its way into Fedora soon enough: http://cgit.freedesktop.org/~airlied/linux/commit/drivers/gpu/drm/drm_edid.c?h=drm-next&id=f89ec8a456dde7f18a13de77b4d79e6b05ca7c84