Re: Screen goes blank after "EDID checksum is invalid" errors

[Stephen Powell <zlinuxman@wowway.com>]

On Sun, 06 Sep 2015 05:45:30 -0400 (EDT), Johannes Bauer wrote:
> 
> [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 43

Some monitors have invalid EDID checksums.  Blame the manufacturer.
Windows is more tolerant of EDID checksum errors than Linux is.
If switching monitors solves your problem, then a bona fide EDID checksum
error in the hardware is probably to blame.  If you're willing to
build a custom kernel, you may be able to circumvent the problem by applying a
patch.  See my kernel-building web page:

   http://users.wowway.com/~zlinuxman/Kernel.htm

In "Step 7: Patch the kernel", there is a specific example of how to apply
this patch.  Basically, it allows you to tell the kernel to ignore EDID
check sum errors by using the following setting in a file with the extension
of ".conf" under /etc/modprobe.d:

   options drm edid_strict=0

This may allow you to use your faulty monitor anyway.  Good luck.

-- 
  .''`.     Stephen Powell    <zlinuxman@wowway.com>
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