[ppc64el] video is inverted on console after "error: no suitable video mode found." message in GRUB

[Mathieu Trudel-Lapierre]

[Impact]
The video is inverted on console after "error: no suitable video mode found." message in GRUB; while booting some ppc64el systems.

[Test case]
- Boot, exit to grub command-line.
- Issue the 'clear' command.

EXPECTED BEHAVIOR: screen should be cleared.
ACTUAL BEHAVIOR: screen has colors inverted.

[Regression potential]
This may affect other grub scripts that expect specific behavior after a 'clear' command; namely that the text attribute is intact. It will now be reset.

[Mathieu Trudel-Lapierre (cyphermox)]

This is for fixing on Trusty only; the changes have already been included in grub since utopic.

[Mathieu Trudel-Lapierre (cyphermox)]

This is a backport of the patch from utopic: http://bazaar.launchpad.net/~ubuntu-branches/ubuntu/utopic/grub2/utopic/view/head:/debian/patches/ieee1275-clear-reset.patch

[Chris J Arges (arges)]

Hello Mathieu, or anyone else affected,

Accepted grub2 into trusty-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/grub2/2.02~beta2-9ubuntu1.2 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

[Paulo Flabiano Smorigo (pfsmorigo)]

Tested using the new release (2.02~beta2-9ubuntu1.2) and it worked fine.

[Chris J Arges (arges)]

The verification of the Stable Release Update for grub2 has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

[Launchpad Janitor (janitor)]

This bug was fixed in the package grub2 - 2.02~beta2-9ubuntu1.2

---------------
grub2 (2.02~beta2-9ubuntu1.2) trusty-proposed; urgency=medium

  * debian/patches/install_powerpc_machtypes.patch: updated: do a better job
    at detecting machine types; so as to use the right utility when updating
    nvram for the boot-device. This also fixes adding a CHRP note on the
    chrp_ibm machines, which broke PowerVM mode. (LP: #1334793)
  * debian/patches/ppc64el-disable-vsx.patch: disable the VSX instruction,
    which is enabled by default on POWER7/8 cpu models, to avoid crashes due
    to instruction exceptions. The kernel will re-enable it when necessary.
    (LP: #1454743)
  * debian/patches/ieee1275-clear-reset.patch: clear the text attribute in
    the clear command. (LP: #1454764)

 -- Mathieu Trudel-Lapierre <email address hidden> Wed, 13 May 2015 12:30:05 -0400