kernel-packages team mailing list archive

[Mathieu Trudel-Lapierre <mathieu.tl@xxxxxxxxx>]

Esokrates, could you try to boot your system after adding
'plymouth:debug' to the kernel command line in grub; and attaching
/var/log/plymouth-debug.log; first making sure it doesn't include your
passphrase for the disk encryption? If that doesn't trigger the bug, you
may need to edit /etc/default/grub to add 'plymouth:debug' there and
reconfigure grub.

So, after testing this for a while it looks to me like this is in fact a
problem with drm, at least on radeon, and likely on nouveau as well. On
my radeon system, it appears that plymouth tries to start the drm
renderer and fails because it can't find the right encoder, or CRTC, to
notice that the screen is lit -- that is, unless it was already lit and
updated as such in drm by going through the grub menu. It asks libdrm
for the available encoders, but the currently selected encoder for the
connector remains 0; and if I bypass this and have it check the encoder
for it's selected crtc, that value is also left at 0.

It seems like upstream linux commit
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drivers/gpu/drm/drm_crtc.c?id=abd69c55dd8f1f71b33b8c6165217f4329db8f25
should help, and in fact if I use the mainline kernel 3.19 rc1, things
appear to be working properly; so I've opened a linux task for this
issue.

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https://bugs.launchpad.net/bugs/1359689

Title:
  cryptsetup password prompt not shown

Status in linux package in Ubuntu:
  Confirmed
Status in plymouth package in Ubuntu:
  Triaged

Bug description:
  Currently in utopic the following happens when booting an encrypted
  setup:

  Press enter in grub, after a while screen freezes (or turns completely
  black) and stays like that. When I press the down key, I can see the
  password prompt. When I press the up key again, I get to the graphical
  password prompt.

  This is demonstrated in the following screencast:
  https://drive.google.com/file/d/0B7EMvd1LJKgZREJocHBueEhpa2s/edit?usp=sharing

  Maybe this is related to the version of plymouth utopic currently uses, a similar debian bug report seems to be resolved with a newer version 0.9.0-6, see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=752752.
  --- 
  ApportVersion: 2.14.6-0ubuntu2
  Architecture: amd64
  DistroRelease: Ubuntu 14.10
  InstallationDate: Installed on 2014-08-21 (0 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20140821)
  Package: plymouth 0.9.0-0ubuntu3
  PackageArchitecture: amd64
  ProcVersionSignature: Ubuntu 3.16.0-9.14-generic 3.16.1
  Tags:  utopic
  Uname: Linux 3.16.0-9-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  --- 
  ApportVersion: 2.14.6-0ubuntu2
  Architecture: amd64
  DefaultPlymouth: /lib/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth
  DistroRelease: Ubuntu 14.10
  InstallationDate: Installed on 2014-08-21 (0 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20140821)
  MachineType: Dell Inc. Precision M4600
  Package: plymouth 0.9.0-0ubuntu3
  PackageArchitecture: amd64
  ProcCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-9-generic root=/dev/mapper/VG--Ubuntu-LV--Ubuntu--ROOT ro rootflags=subvol=@ cryptopts=target=Ubuntu,source=/dev/disk/by-uuid/6fc200da-aa04-4e73-b6a7-a2326f0b6204,lvm=VG-Ubuntu quiet splash vt.handoff=7
  ProcFB: 0 nouveaufb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-9-generic root=/dev/mapper/VG--Ubuntu-LV--Ubuntu--ROOT ro rootflags=subvol=@ cryptopts=target=Ubuntu,source=/dev/disk/by-uuid/6fc200da-aa04-4e73-b6a7-a2326f0b6204,lvm=VG-Ubuntu quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.16.0-9.14-generic 3.16.1
  Tags:  utopic
  TextPlymouth: /lib/plymouth/themes/ubuntu-text/ubuntu-text.plymouth
  Uname: Linux 3.16.0-9-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 03/10/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A14
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA14:bd03/10/2013:svnDellInc.:pnPrecisionM4600:pvr01:rvnDellInc.:rn:rvr:cvnDellInc.:ct9:cvr:
  dmi.product.name: Precision M4600
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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