Comment 64 for bug 1899308

Also seems to effect Dell Latitude E6400 with C2D CPU's and an E6510 with i7 M620 CPU laptops using 20201015 Ubuntu image created with Startup Disk Creator in 20.04. The same USB with the same image works OK in my old Intel Desktop so I'm reasonably certain it's hardware specific.

Typical behavior for these Latitude laptops is needing to press F12 while the BIOS screen is displayed and a boot menu will be displayed. Doesn't matter if you have USB set as first boot option in BIOS - sort of a buggy BIOS I guess, but in this case the USB is not even recognized with a recent 20.10 Live USB inserted.

If I go ahead and boot into an installed Ubuntu system on one of these effected systems with the USB still inserted a message is displayed saying:

 "Error mounting /dev/sdb3 at /media/lance/Ubuntu 20.10 amd64: Command-line `mount -t "iso9660" -o "uhelper=udisks2,nodev,nosuid,uid=1000,gid=1000,iocharset=utf8,mode=0400,dmode=0500" "/dev/sdb3" "/media/lance/Ubuntu 20.10 amd64"' exited with non-zero exit status 32: mount: wrong fs type, bad option, bad superblock on /dev/sdb3,
       missing codepage or helper program, or other error

       In some cases useful info is found in syslog - try
       dmesg | tail or so.

If in fact that USB drive is at fault it's odd that it will boot in my old desktop computer, but I will try a different drive just to be certain. I'm really at a loss as what else to try at this point.