kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Baokai Lei, this bug was reported a while ago and there hasn't been any
activity in it recently. We were wondering if this is still an issue? If
so, could you please test for this with the latest development release
of Ubuntu? ISO images are available from http://cdimage.ubuntu.com
/daily-live/current/ .

If it remains an issue, could you please run the following command in
the development release from a Terminal
(Applications->Accessories->Terminal), as it will automatically gather
and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.13-rc3

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1057532

Title:
  Monitor goes black ("no signal") after Grub, comes back to life when X
  starts

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  After selecting an entry from the Grub menu and booting starts, the screen goes blank, and the monitor displays "no signal". When booting ends and X starts up, the screen comes back to life, and the LightDM login screen appears.
  I'm using a Radeon HD 6850 with the opensource driver.

  Kernel version: 3.5.0-15.23-generic 3.5.4

  This is a regression, as the issue wasn't present with an earlier 3.5 kernel.
  When I updated recently, I updated to kernel version 15.22, which exposed the issue. Updating to a newer version (.23) did nothing to fix the issue.

  Update: Installing the kernels did not fix the issue either:
  3.5.0-16.24, 3.5.0-16.25

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: linux-image-3.5.0-13-generic 3.5.0-13.14
                                        3.5.0-14.15, 16, 17, 18, 19
                                        3.5.0-15.20, 21, 22, 23, 24
                                        3.5.0-16.25
  ProcVersionSignature: Ubuntu 3.5.0-15.23-generic 3.5.4
  Uname: Linux 3.5.0-15-generic x86_64
  ApportVersion: 2.5.2-0ubuntu4
  Architecture: amd64
  Date: Thu Sep 27 15:25:08 2012
  InstallationMedia: Kubuntu 12.10 "Quantal Quetzal" - Beta amd64 (20120913)
  ProcFB: 0 radeondrmfb
  SourcePackage: linux

  Update: Apparently the Ubuntu kernels can't handle the "vt.handoff=7" option properly, which causes the black screen.
  See my comment below for how to fix it:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1057532/comments/38

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