Ubuntu 14.04 doesn't boot correctly after VB upgrade

[Stéphane Charette]

Ubuntu 14.04-32bit desktop installed as guest on Ubuntu 15.10-64 bit host.

Upgraded yesterday from VB 5.0.16 to 5.0.18. Since the upgrade, the guest no longer boots correctly. It goes to a completely black screen instead of the usual Ubuntu desktop.

Log file ends with this:

13:40:37.514254 Changing the VM state from 'SUSPENDED' to 'RESUMING'
13:40:37.514394 Changing the VM state from 'RESUMING' to 'RUNNING'
13:48:35.192950 VBVA: InfoScreen: [0] @0,0 800x600, line 0xc80, BPP 0, flags 0x5
13:48:35.192975 Display::handleDisplayResize: uScreenId=0 pvVRAM=00007f42081e2000 w=800 h=600 bpp=0 cbLine=0xC80 flags=0x5
13:48:35.193003 GUI: UIFrameBufferPrivate::NotifyChange: Screen=0, Origin=0x0, Size=800x600, Sending to async-handler
13:48:35.193066 GUI: UIMachineView::sltHandleNotifyChange: Screen=0, Size=800x600
13:48:35.193077 GUI: UIFrameBufferPrivate::handleNotifyChange: Size=800x600
13:48:35.193098 GUI: UIFrameBufferPrivate::performResize: Size=800x600, Using fallback buffer since no source bitmap is provided
13:52:59.965882 Changing the VM state from 'RUNNING' to 'SUSPENDING'
13:53:00.021278 PDMR3Suspend: 55 340 238 ns run time

[Stéphane Charette]

Even though the guest boots to a black screen, I can still SSH to it. Looking at /var/log/Xorg.0.log, I see it ends with this:

[     6.265] (II) AIGLX: Screen 0 is not DRI2 capable
[     6.265] (EE) AIGLX: reverting to software rendering
[     6.266] (II) AIGLX: Loaded and initialized swrast
[     6.266] (II) GLX: Initialized DRISWRAST GL provider for screen 0
[     6.267] (EE) 
Fatal server error:
[     6.267] (EE) failed to create screen resources(EE) 
[     6.267] (EE) 
Please consult the The X.Org Foundation support 
	 at http://wiki.x.org
 for help. 
[     6.267] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[     6.267] (EE) 
[     6.276] (EE) Server terminated with error (1). Closing log file.

I'm a bit confused about what I'm seeing in the /opt/ directory. I already have a VBoxGuestAdditions-5.0.18 directory, though I don't recall installing the 5.0.18 guest additions yet:

> ls -l /opt/
total 16
drwxr-xr-x 3 root root 4096 Dec 20 13:48 google/
drwxr-xr-x 2 root root 4096 Feb  6 23:34 VBoxGuestAdditions-5.0.12/
drwxr-xr-x 2 root root 4096 Apr 18 19:05 VBoxGuestAdditions-5.0.14/
drwxr-xr-x 9 root root 4096 Apr 18 19:06 VBoxGuestAdditions-5.0.18/

Looking at running applications, I don't see the usual VBoxClients. All I have is:

> ps axf | grep -i [v]box
  535 ?        S<     0:00  \_ [iprt-VBoxWQueue]
 1755 ?        Sl     0:00 /usr/sbin/VBoxService --pidfile /var/run/vboxadd-service.pid

[Stéphane Charette]

I manually re-installed the 5.0.18 guest additions like this, but it didn't help:

sudo mount /dev/cdrom /mnt
cd /mnt/
sudo ./VBoxLinuxAdditions.run 
sudo reboot

Also tried to toggle the "Enable 3D Acceleration" setting in the guest's machine settings, but it doesn't make a difference.

[Frank Mehnert]

Which kernel do you have installed in your Ubuntu 14.04 guest?

[Stéphane Charette]

Replying to frank:

Which kernel do you have installed in your Ubuntu 14.04 guest?

uname -a
Linux 32bit-cross-compiler 3.19.0-58-generic #64~14.04.1-Ubuntu SMP Fri Mar 18 19:05:42 UTC 2016 i686 i686 i686 GNU/Linux

[Frank Mehnert]

Thanks. Please also provide a VBox.log file.

[Stéphane Charette]

machine log as requested when guest boots to a black screen

[Frank Mehnert]

I have a Trusty guest with Linux 3.13 which works perfectly. Perhaps the different kernel version.

Oh, could you also attach the complete /var/log/Xorg.0.log?

[Stéphane Charette]

Xorg log files from /var/log/...

[Frank Mehnert]

Thanks. Now I updated my Trusty guest to the Vivid LTS stuff (kernel already was, now did X11) and it still works. I guess we need more debugging output in the vboxvideo driver.

[Michael Thayer]

Just a guess, but does increasing the VRAM make a difference?

[Stéphane Charette]

Replying to michael:

Just a guess, but does increasing the VRAM make a difference?

Per Frank on the dev mailing list, I tried the 5.0.16 guest additions, and the problem has gone away. I have not tried increasing the VRAM which is currently set to the default 12 MB.

[Michael Thayer]

I seem to have reproduced this by installing the 5.0.18 Additions on a freshly installed and updated Ubuntu 14.04.3 32-bit machine.

[Frank Mehnert]

The latest 5.0 Guest Additions test build (> revision 107107) contains a fix for 32-bit guests mentioned in the previous comment. Could you confirm?

[Frank Mehnert]

Fixed in 5.0.22.