[drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Won't Fix
|
High
|
Andy Whitcroft | ||
Natty |
Invalid
|
High
|
Andy Whitcroft |
Bug Description
Recently, with .37-12 (.38 is so unstable generally that I can't run it long enough to see if it's a problem there), X will flicker, and I'll see forms of this in dmesg:
[159746.098380] [drm:drm_
[159746.098384] [drm:drm_
[159746.098387] <3>00 ff ff ff ff ff ff 00 10 ac 15 f0 4c 36 43 34 ............L6C4
[159746.098389] <3>21 14 01 03 80 34 20 78 ee 1e c5 af ff ff ff ff !....4 x........
[159746.098391] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
[159746.098393] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
[159746.098394] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
[159746.098396] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
[159746.098398] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
[159746.098400] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
[159746.098401]
Sometimes I also see:
[163776.033364] i2c i2c-10: sendbytes: NAK bailout.
And then, about every 2 days, video signal is not restored after one of these flickers, and the monitor stays dark. This is successful:
sudo get-edid
Swapping cables does not change it. Swapping monitors does not change it. In fact, changing monitors actually triggers the kernel to re-request edid, which fails with each new monitor attached, where as "sudo get-edid" has no problem. So this does not appear to be motherboard, cable, or monitor related. Something in the kernel DRM is breaking and not recovering, as far as I can tell.
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC268 Analog [ALC268 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xe0420000 irq 43'
Mixer name : 'Realtek ALC268'
Components : 'HDA:10ec0268,
Controls : 17
Simple ctrls : 11
DistroRelease: Ubuntu 11.04
Frequency: Once every few days.
Package: linux (not installed)
ProcEnviron:
LANGUAGE=en_US:en
PATH=(custom, user)
LANG=en_US.UTF-8
LC_MESSAGES=
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=
ProcVersionSign
Regression: Yes
RelatedPackageV
linux-
linux-
linux-firmware 1.46
Reproducible: No
RfKill:
Tags: natty kernel-graphics regression-release needs-upstream-
Uname: Linux 2.6.37-12-generic x86_64
UserGroups: adm admin audio cdrom dialout dip floppy fuse libvirtd lpadmin mythtv plugdev sambashare sbuild scanner video
WpaSupplicantLog:
dmi.bios.date: 09/22/2008
dmi.bios.vendor: Intel Corp.
dmi.bios.version: JOQ3510J.
dmi.board.
dmi.board.name: DQ35JO
dmi.board.vendor: Intel Corporation
dmi.board.version: AAD82085-800
dmi.chassis.type: 3
dmi.modalias: dmi:bvnIntelCor
Changed in linux (Ubuntu Natty): | |
assignee: | nobody → Andy Whitcroft (apw) |
tags: | added: kernel-key |
Changed in linux (Ubuntu Natty): | |
milestone: | ubuntu-11.04-beta-1 → ubuntu-11.04-beta-2 |
Changed in linux (Ubuntu Natty): | |
milestone: | ubuntu-11.04-beta-2 → natty-updates |
Changed in linux (Ubuntu): | |
status: | In Progress → Opinion |
status: | Opinion → In Progress |
tags: | added: oneiric precise |
tags: | removed: kernel-key |
apport information