[Bug 105217] Blank screen with only mouse pointer after 7.10 radeon driver update; display does not switch to tty7 upon lightdm start; Xorg.0.log quickly grows

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105217

--- Comment #13 from Mario Kleiner  ---
If you create a file named /etc/X11/xorg.conf

with this text snippet...

Section "Device"
Identifier  "Card0"
Driver  "ati"
Option  "DRI" "3"
EndSection

... and restart lightdm, it should do the trick.

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[Bug 105217] Blank screen with only mouse pointer after 7.10 radeon driver update; display does not switch to tty7 upon lightdm start; Xorg.0.log quickly grows

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105217

--- Comment #12 from james.coulth...@verizon.net ---
Just looked at Michael's change...  hah, look at that. 
DRI option 3 must force 32 bit depth?

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[Bug 105217] Blank screen with only mouse pointer after 7.10 radeon driver update; display does not switch to tty7 upon lightdm start; Xorg.0.log quickly grows

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105217

--- Comment #11 from james.coulth...@verizon.net ---
(In reply to Michel Dänzer from comment #10)
> James, does
> 
>  Option "DRI" "3"
> 
> avoid the problem? If so, it's probably the issue Mario mentioned. If not,
> please attach the corresponding Xorg log file again.

Hi Michael, and thank you, Mario, for the comments.

I'm not familiar with that configuration setting.
Can you elaborate on what file and line you would like me to change, and I
would be happy to do so?

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[Bug 105217] Blank screen with only mouse pointer after 7.10 radeon driver update; display does not switch to tty7 upon lightdm start; Xorg.0.log quickly grows

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105217

--- Comment #10 from Michel Dänzer  ---
James, does

 Option "DRI" "3"

avoid the problem? If so, it's probably the issue Mario mentioned. If not,
please attach the corresponding Xorg log file again.

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[Bug 105217] Blank screen with only mouse pointer after 7.10 radeon driver update; display does not switch to tty7 upon lightdm start; Xorg.0.log quickly grows

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105217

--- Comment #9 from Mario Kleiner  ---
A r300, so accordign to your log, the driver uses DRI2 + EXA.

I think this would hit the bug which iirc was introduced in 7.10.0 which causes
pageflipping failure under DRI2, which was fixed in master by Michel's commit
733f606dd6ca8350 ("Always use screen depth/bpp for KMS framebuffers").

Might explain what you see.

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[Bug 105217] Blank screen with only mouse pointer after 7.10 radeon driver update; display does not switch to tty7 upon lightdm start; Xorg.0.log quickly grows

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105217

james.coulth...@verizon.net changed:

   What|Removed |Added

Summary|Blank screen with only  |Blank screen with only
   |mouse pointer after 7.10|mouse pointer after 7.10
   |radeon driver update (mesa  |radeon driver update;
   |17.2.8); display does not   |display does not switch to
   |switch to tty7 upon lightdm |tty7 upon lightdm start;
   |start; Xorg.0.log quickly   |Xorg.0.log quickly grows
   |grows   |

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[Bug 105217] Blank screen with only mouse pointer after 7.10 radeon driver update (mesa 17.2.8); display does not switch to tty7 upon lightdm start; Xorg.0.log quickly grows

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105217

--- Comment #8 from james.coulth...@verizon.net ---
Created attachment 137560
  --> https://bugs.freedesktop.org/attachment.cgi?id=137560=edit
Xorg.0.log of 7.9 radeon driver session

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[Bug 105217] Blank screen with only mouse pointer after 7.10 radeon driver update (mesa 17.2.8); display does not switch to tty7 upon lightdm start; Xorg.0.log quickly grows

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105217

--- Comment #7 from james.coulth...@verizon.net ---
That fixed it.
I downloaded the 7.9 *.deb.

I executed:
> sudo dpkg -i 
> xserver-xorg-video-radeon-hwe-16.04_7.9.0-0ubuntu1_16.04.1_amd64.deb

> sudo apt-get -f install

> sudo apt-mark hold xserver-xorg-video-radeon-hwe-16.04

This downgraded the radeon driver package, fixed dependencies, and held the
driver pkg from further updates.

Rebooted and issue is resolved.  No other files were touched.  It's definitely
something in the 7.10 changes.

I will upload a new Xorg.0.log of the 7.9 behavior.

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[Bug 105217] Blank screen with only mouse pointer after 7.10 radeon driver update (mesa 17.2.8); display does not switch to tty7 upon lightdm start; Xorg.0.log quickly grows

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105217

--- Comment #4 from james.coulth...@verizon.net ---
Result of changing to modesetting driver:
The system booted straight to desktop without the need to manually switch to
VT7.  Screen was not blank at startup; however, the screen did not display
correctly.  The desktop was skewed and looked like a set of wavy lines, like
those found on an old style analog television when the vertical and/or
horizontal scan timing is off.  Mouse pointer appeared unaffected.  

Could not stay on modesetting driver and switched back.  Xorg.0.log of the
session has been provided.  Warning messages are not found in the new logfile.

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[Bug 105217] Blank screen with only mouse pointer after 7.10 radeon driver update (mesa 17.2.8); display does not switch to tty7 upon lightdm start; Xorg.0.log quickly grows

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105217

Michel Dänzer  changed:

   What|Removed |Added

 Attachment #137559|application/x-trash |text/plain
  mime type||

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[Bug 105217] Blank screen with only mouse pointer after 7.10 radeon driver update (mesa 17.2.8); display does not switch to tty7 upon lightdm start; Xorg.0.log quickly grows

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105217

--- Comment #3 from james.coulth...@verizon.net ---
Created attachment 137559
  --> https://bugs.freedesktop.org/attachment.cgi?id=137559=edit
Xorg.0.log of modesetting driver session

This is the Xorg.0.log of the environment when the modesetting driver is used
in stead of 7.10 radeon.  The issue disappears from the log and display
behavior changes.

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[Bug 105217] Blank screen with only mouse pointer after 7.10 radeon driver update (mesa 17.2.8); display does not switch to tty7 upon lightdm start; Xorg.0.log quickly grows

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105217

--- Comment #2 from james.coulth...@verizon.net ---
(In reply to Michel Dänzer from comment #1)
> (In reply to james.coulthard from comment #0)
> > 
> > It upgraded the following libraries (`/var/log/dpkg.log [pkg][old ver][new
> > ver]`):
> 
> Are those the only packages that were upgraded?
[JMC] Yes, these are exactly the packages that upgraded at the time of the
issue.  Nothing else.  Definitively not unity or compiz packages.  I held off
taking those updates.
> 
> 
> > I appear to be booting to the wrong VT display. All of the symptoms above
> > are true; however, if I perform a
> > CTRL+ALT+F1 (up to F6) at
> > startup and then immediately perform a
> > CTRL+ALT+F7, which switches the VT, I go to
> > my normal desktop as if it had booted correctly.
> 
> That sounds like an Ubuntu startup issue then.
[JMC]  Possibly, but, I've seen other posts online where an issue with the
driver causes the blank screen and mouse pointer.  I'm thinking it might be a
delay or race condition with Upstart or LightDM waiting on Xorg to start, but,
root cause stems from radeon (ie. the warning messages.)  Also, Xorg.0.log
shouldn't fill up with 30MB of warning messages in 8 hours...  

> 
> Does the problem also occur using the Xorg modesetting driver instead of
> radeon? If not, please attach the corresponding Xorg log file.
> 
[JMC] I have not tried this.  Will try it and report back.
> 
> > I think something is hosed with the 7.10 radeon driver in mesa 17.2.8,
> 
> The Xorg radeon driver is independent from Mesa. This issue doesn't look
> directly related to Mesa.
[JMC]  Agree.  I believe it was just coincident that radeon and Mesa updated at
the same time.

[JMC] Thanks for taking the time to look at this Michael.  Pls let me know if
there is anything you would like to see form the system.

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[Bug 105217] Blank screen with only mouse pointer after 7.10 radeon driver update (mesa 17.2.8); display does not switch to tty7 upon lightdm start; Xorg.0.log quickly grows

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105217

--- Comment #1 from Michel Dänzer  ---
(In reply to james.coulthard from comment #0)
> 
> It upgraded the following libraries (`/var/log/dpkg.log [pkg][old ver][new
> ver]`):

Are those the only packages that were upgraded?


> I appear to be booting to the wrong VT display. All of the symptoms above
> are true; however, if I perform a
> CTRL+ALT+F1 (up to F6) at
> startup and then immediately perform a
> CTRL+ALT+F7, which switches the VT, I go to
> my normal desktop as if it had booted correctly.

That sounds like an Ubuntu startup issue then.

Does the problem also occur using the Xorg modesetting driver instead of
radeon? If not, please attach the corresponding Xorg log file.


> I think something is hosed with the 7.10 radeon driver in mesa 17.2.8,

The Xorg radeon driver is independent from Mesa. This issue doesn't look
directly related to Mesa.

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[Bug 105217] Blank screen with only mouse pointer after 7.10 radeon driver update (mesa 17.2.8); display does not switch to tty7 upon lightdm start; Xorg.0.log quickly grows

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105217

Michel Dänzer  changed:

   What|Removed |Added

 Attachment #137544|text/x-log  |text/plain
  mime type||

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