Christopher Penalver (message #3) I have experimented with the bios
upgrade as you suggest.

I managed to upgrade the bios as you requested to 2.6.3 but this does
not seem to solve the problem; when I boot from today's Saucy image, I
still get the weird herringbone stripey screen.  The workaround is still
to wait for the screen to blank and then when it reactivates it appears
to be normal.

I do not understand your comment "Please note your current BIOS is
already in the Bug Description, so posting this on the old BIOS would
not be helpful".

I will assume that you mean I must do the update before I do the sudo
dmidecode... and not that you mean opening a new bug report.  If I
assume incorrectly, please let me know.

Therefore, the results of the commands are:

clh@valencia:~$ sudo dmidecode -s bios-version && sudo dmidecode -s 
bios-release-date
2.6.3    
12/07/2007
clh@valencia:~$ 

In case anyone else is interested, I made a valiant effort to update the
bios from Linux but this is one of those new bios updaters that "must"
be run from Windows, and I could not get any of the methods noted in the
link provided by Christopher to work.

I am therefore embarrassed to say that I had the Windows install disks
handy and therefore used them to upgrade the bios.  On the bright side,
this is the first time since 2005 that I have used Windows to do
anything.

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https://bugs.launchpad.net/bugs/1234429

Title:
  vertical coloured lines / herringbone pattern on startup

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