Sorry, I don't get far enough to get any more debug information. If I
boot in recovery mode, the machine locks completely after displaying
'Loading initial ramdisk ...'. If I follow
https://wiki.ubuntu.com/DebuggingKernelBoot I don't even get that, just
a hung machine with a totally blank screen.
With the options from comment #4 I get the same screen shot as in
comment #6, except of course the kernel level is now 4.4.0-38-generic
I've also had no luck booting the yaketty daily. Same lockup.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1434136
Title:
HP Pavilion 13-b208tu fails to boot with F.26 bios, PSOD
Status in linux package in Ubuntu:
Confirmed
Bug description:
While trying to fix Bug #1432659, I updated the HP Pavilion 13-b208tu bios to
the latest available on the HP website (F.26):
http://support.hp.com/us-en/drivers/selfservice/HP-Pavilion-13-b200-Notebook-PC-series/7527795/model/7597682
After the update, the laptop no longer boots Ubuntu 14.10 or Ubuntu
15.04 (Ubuntu 15.04 from the hard drive, Ubuntu 14.10 using a LiveCD).
The grub menu is available and works, the kernel loads, the initrd
step works, and then it hangs hard and requires power cycling.
The required information for a kernel bug report can be found in Bug
#1432659, from the original shipped F.23 bios. I obviously can't
attach information with the F.26 bios loaded.
I can confirm that the bios update worked, and I have repeated it
twice. HP diagnostics give the system a green light, and I can boot to
FreeDOS as normal. I'll leave the system unbootable with the F.26 bios
for a while in case someone can help me diagnose further from grub.
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