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.
** Tags removed: bios-outdated-f.34
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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
Stuart Bishop, could you please provide the information requested in
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1434136/comments/10
?
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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F35 bios fails too, in exactly the same way. F24 still the last known
good (and no longer available for download!)
** Changed in: linux (Ubuntu)
Status: Expired => Confirmed
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[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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Stuart Bishop, would HP's latest BIOS allow you a boot?
If not, could you please provide the information from
https://wiki.ubuntu.com/DebuggingKernelBoot ?
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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** Tags added: bios-outdated-f.34
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Title:
HP Pavilion 13-b208tu fails to boot with F.26 bios, PSOD
Status in linux package in
** Tags added: wily
** Description changed:
- While trying to fix Bug #1432659, I updated the HP Pavilion 13-b208tu
- bios to the latest available on the HP website (F.26). After the update,
- the laptop no longer boots Ubuntu 14.10 or Ubuntu 15.04 (Ubuntu 15.04
- from the hard drive, Ubuntu
The issue is unchanged with the Ubuntu 15.10 beta (kernel 4.2.0-16)
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Title:
HP Pavilion 13-b208tu fails to boot with F.26 bios,
Stuart Bishop, could you please provide the missing information
following https://wiki.ubuntu.com/DebuggingKernelBoot ?
** Changed in: linux (Ubuntu)
Importance: Undecided = High
** Changed in: linux (Ubuntu)
Status: Confirmed = Incomplete
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Still just those 4 lines using:
ro recovery nomodeset debug ignore_loglevel log_buf_len=10M
print_fatal_signals=1 LOGLEVEL=8 earlyprintk=efi,keep sched_debug
i915.modeset=0 nouveau.modeset=0
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I'll attach a photo of how far I've gotten, although it won't add much.
** Attachment added: Screenshot showing console output with kernal debug flags
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1434136/+attachment/4350641/+files/IMG_20150320_181753.jpg
** Changed in: linux (Ubuntu)
Stuart Bishop, unfortunately, that screenshot wasn't terribly helpful.
Just to clarify, does your BIOS allow you to switch off UEFI?
If so, could you please do this and advise if you then are able to boot?
** Changed in: linux (Ubuntu)
Status: Confirmed = Incomplete
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I get the same failure booting an Ubuntu 14.10 LiveCD USB stick in non
UEFI mode (using the F9 boot menu I can explicitly select booting the
stick in UEFI or non-UEFI mode).
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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** Tags added: utopic vivid
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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:
Per description, fresh information cannot currently be collected but
pre-update kernel bug report information can be found in Bug #1432659
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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Using the earlyprintk=efi kernel boot option, I can get 4 more lines of
output. Initializing the cpuset, cpu and cpuacct cgroups, and the final
line printing the Linux kernel version.
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