Comment 49 for bug 1418706

Revision history for this message
david6 (andrew-dowden) wrote : Re: Vivid: UEFI: blank drive incorrectly detected as existing BIOS-mode install

Attempting to install Vivid (15.04) Daily Build, on HP Stream 11 (Bay Trail notebook, with 32GB eMMC storage). Device already has 14.10 64-bit present (standard auto-install: EFI, system, swap), and Secure-Boot mode is enabled.

http://cdimage.ubuntu.com/ubuntu/daily-live/pending/
  vivid-desktop-amd64.iso 17-Apr-2015 08:38

- Installed using 4GB USB drive, with UEFI-only image; (.ISO file 'restored' to USB drive, no SysLinux or MBR)
- Installer incorrectly prompts with warning that the install target contains "an existing BIOS-mode install", and that Legacy-mode is enabled; (prompts with option to continue in 'UEFI' mode)
- install appears to complete, and prompts for reboot; (identical behaviour as 14.10 install)
- reboot stops, device still power-on but screen blank (no backlight); (often occurs with 14.10 install, on HP Stream 11)
- force off, wait 5, power on. (boots normally)

However. now prompts with:
"Please enter passphrase for disk cryptswap1 on none!" (new behaviour !?)

Pressing <Enter> <Enter> gets through to normal login ..

CONCLUSION:

- primary issue may now be 'fixed';
- the 'force-UEFI' dialog/prompt is still an issue; (separate bug?)
- prompt for passphrase is well .. ODD.