Public bug reported:
Model: Toshiba Satellite C55-B5299
CPU: Intel Celeron N2830 / 2.16 GHz
RAM: 8GB DDR3L
Current OS: Ubuntu 18.04 Stable
UEFI Version: 5.10 (Latest)
Problem Description:
Beginning in April 2018, my laptop would stay at the OEM logo screen upon being
powered on, with no activity except the running fans. I am able to boot into
the EFI to change settings. (Which are able to be modified) However, entering
the EFI Boot Menu to boot from a device will abruptly power off the laptop.
Previous Workarounds:
- Entering EFI and selecting "load setup defaults" temporarily fixed the issue
until it occurred again at a later date.
- Switching from UEFI to CSM and back again temporarily allowed me to boot into
the system, as everything functioned normally.
Potential Explanation:
Notably, this device ran Windows 10, Ubuntu 17.10, and currently Ubuntu 18.04.
I am convinced that my EFI is corrupted from a previously-installed Ubuntu
release, possibly 17.10, because I am now unable to boot from ANY device in the
EFI boot menu. Selecting one, for instance USB or HDD, results in an immediate
shut down. This appears to not be a hardware issue because restoring the EFI
defaults used to fix the issue. Now, none of the workarounds above will work. I
have ruled out hardware problems, because the computer functioned fine after
the workaround. The AC adapter works fine, battery holds a charge, and computer
would never crash. Even after removing the HDD, the computer still WILL NOT
even say "No OS found", as it is unable to boot. Again, everything worked
perfectly until I decided to shut down my laptop, only to experience this issue
again. Switching to CSM Legacy boot allows me to boot the computer.
I have determined that EFI Corruption Is Likely.
Many thanks for any help!
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: bionic hw-specific
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https://bugs.launchpad.net/bugs/1780588
Title:
Toshiba Satellite C55-B5299 Powers Off When Booting From Any EFI
Device
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