The real problem is grub. When I ran boot-repair, this tool gave the
following answer: "The boot files of [The operating system being used -
Ubuntu 14.04.5 LTS] are far from the beginning of the disk. Your BIOS
might not detect them. You may want to retry it after creating a / boot
partition (EXT4,> 200MB, beginning of the disk). This can be done with
tools like gParted. Then select this partition via the [Partition /
separate boot:] option in [Boot Repair].
(Https://help.ubuntu.com/community/BootPartition)". This problem is
problematic to find because when I turn off the computer and then
startup again several minutes later, the computer works very well, but
if I startup the computer several hours later, the computer fails
miserably. I think of that this problem is a bug because the manual in
/usr/share/info/grub.info.gz says: "GRUB understands filesystems and
kernel executable formats, so you can load an arbitrary operating system
the way you like, without recording the physical position of your kernel
on the disk.". If this is true, what: The boot files of [The operating
system being used - Ubuntu 14.04.5 LTS] are far from the beginning of
the disk, means? I do not know.
** Changed in: linux (Ubuntu)
Status: Incomplete => Invalid
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https://bugs.launchpad.net/bugs/1637031
Title:
In cold startup there is dark/blank screen
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