Bug 1336959 - graphical target isolation fails, results in screen flicker and no gdm appears
Summary: graphical target isolation fails, results in screen flicker and no gdm appears
Keywords:
Status: CLOSED EOL
Alias: None
Product: Fedora
Classification: Fedora
Component: gnome-session
Version: 24
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Ray Strode [halfline]
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-05-17 22:07 UTC by Chris Murphy
Modified: 2017-08-08 14:32 UTC (History)
7 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2017-08-08 14:32:26 UTC
Type: Bug
Embargoed:


Attachments (Terms of Use)
journal_bug1336959.txt (1.47 MB, text/plain)
2016-05-17 22:15 UTC, Chris Murphy
no flags Details
journal_gdmdebug_bug1336959.txt (869.64 KB, text/plain)
2016-05-17 22:34 UTC, Chris Murphy
no flags Details

Description Chris Murphy 2016-05-17 22:07:52 UTC
Description of problem:

I manually isolate multi-user.target, then isolate graphical.target, it always fails. If this is a normal boot where it progresses for the first time from multi-user to graphical, it always works. So something is happening when reverting from graphical to multi-user and then back, that causes graphical to fail.

This is a regression from Fedora 23 on this hardware, where this problem doesn't happen.


Version-Release number of selected component (if applicable):
gnome-session-3.20.1-1.fc24.x86_64
xorg-x11-server-Xorg-1.18.3-2.fc24.x86_64
xorg-x11-drv-ati-7.6.1-3.20160215gitd41fccc.fc24.x86_64


How reproducible:
Always

Steps to Reproduce:
1. Either clean boot or just log out.
2. Get to a console, tty2 in this case.
3. systemctl isolate multi-user.target
4. systemctl isolate graphical.target

Actual results:

Several screen flickers of text console tty1, no graphical environment starts, no gdm, just a console with a login prompt (where they keyboard input isn't reflected on scree). I can still switch to tty2 and enter commands.

Expected results:

I should see gdm/login window and be able to login.

Additional info:

This system was using Fedora 23 Workstation, and has been upgraded via Gnome Software 3.20 using the new graphical upgrade feature.

Comment 1 Chris Murphy 2016-05-17 22:15:27 UTC
Created attachment 1158542 [details]
journal_bug1336959.txt

journal for this boot. The isolate graphical.target command happens at monotonic time [26073.873794].

Suspicious items:


[26074.933133] f23m.localdomain gnome-session[5508]: gnome-session-binary[5508]: WARNING: Error getting login monitor: -13
[26074.933291] f23m.localdomain gnome-session-binary[5508]: WARNING: Error getting login monitor: -13
[26074.933641] f23m.localdomain gnome-session-binary[5508]: WARNING: Lost name on bus: org.gnome.SessionManager
[26074.933786] f23m.localdomain gnome-session[5508]: gnome-session-binary[5508]: WARNING: Lost name on bus: org.gnome.SessionManager
[26074.945729] f23m.localdomain gnome-session[5508]: Unable to init server: Could not connect: Connection refused
[26074.945867] f23m.localdomain gnome-session[5508]: ** (gnome-session-failed:5515): WARNING **: Cannot open display:
[26074.949138] f23m.localdomain gdm-launch-environment][5502]: pam_unix(gdm-launch-environment:session): session closed for user gdm


[26074.950034] f23m.localdomain gdm[5494]: GdmDisplay: display lasted 0.191156 seconds
[26074.951134] f23m.localdomain audit[1]: USER_AVC pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='Unknown permission stop for class system exe="/usr/lib/systemd/systemd" sauid=0 hostname=? addr=? terminal=?'
[26074.953959] f23m.localdomain systemd-logind[781]: Removed session c8.
[26074.954210] f23m.localdomain gdm[5494]: Child process -5506 was already dead.
[26074.954349] f23m.localdomain gdm[5494]: Child process 5502 was already dead.
[26074.954472] f23m.localdomain gdm[5494]: Unable to kill session worker process
[26074.961462] f23m.localdomain systemd[1]: Received SIGRTMIN+21 from PID 5460 (plymouthd).


I never see plymouth or anything graphical during these flickers.


[26075.330555] f23m.localdomain /usr/libexec/gdm-x-session[5522]: (EE) RADEON(0): drmmode_do_crtc_dpms cannot get last vblank counter

Comment 2 Chris Murphy 2016-05-17 22:17:41 UTC
/etc/gdm/custom
#WaylandEnable=false

So there must be automatic fallback to X.


01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Whistler [Radeon HD 6630M/6650M/6750M/7670M/7690M] [1002:6741] (prog-if 00 [VGA controller])
	Subsystem: Apple Inc. MacBookPro8,2 [Core i7, 15", Late 2011] [106b:00e2]

Comment 3 Chris Murphy 2016-05-17 22:34:24 UTC
Created attachment 1158543 [details]
journal_gdmdebug_bug1336959.txt

/etc/gdm/custom.conf
[debug]
# Uncomment the line below to turn on debugging
Enable=true

Comment 4 Chris Murphy 2016-06-14 19:09:38 UTC
Non-obvious in the original description is this is Fedora 24 Workstation, i.e. it boots by default in graphical.target.

  graphical.target -> multi-user.target -> graphical.target

The failure is the 2nd transition, from multi-user to graphical.

Comment 5 Joachim Backes 2016-06-15 05:09:00 UTC
Same effect here.

I'm not using systemd directly, but the legacy commands "init 3 " and "init 5".

Comment 6 Felix Miata 2016-06-15 06:27:58 UTC
(In reply to Chris Murphy from comment #4)
>  graphical.target -> multi-user.target -> graphical.target 
> The failure is the 2nd transition, from multi-user to graphical.

On F24 PC host p5bse, also with radeon gfx, but with KDM instead of GDM or SDDM, on switch back from multi-user to graphical the greeter appears, but the result of attempting login to a Plasma session instead of a normal session brings up xmessage reporting

"Could not start D-Bus. Can you call qdbus?"

on a normal F24 splash screen. startx -- :1 from a vtty login produces a normal Plasma session.

Comment 7 srakitnican 2016-07-31 08:33:17 UTC
Same issue here with Intel Ivy Bridge.

Comment 8 Ian Donaldson 2016-09-11 11:14:59 UTC
Just dnf distro-sync upgraded from f23 to f24 and X fails to start automatically:

This is the only error line in Xorg.0.log:

[   141.948] (EE) RADEON(0): drmmode_do_crtc_dpms cannot get last vblank counter

however logging in on console and running startx works ok.

I use KDM...

Comment 9 Ian Donaldson 2016-09-14 09:48:22 UTC
I fixed my issue by doing this:

 systemctl disable sddm
 rpm -e sddm sddm-kcm
 systemctl disable gdm
 systemctl enable  kdm
 init 3
 init 5

And then kdm login screen reappears.

Logged in and some KDE stuff started up ok, except there was a dialog box
saying 

  "Could not start D-Bus.  Can you call qdbus?"  

and when you hit OK to that, you get logged out.

Rebooted, then all good.

Looks like the distro-sync didn't re-activate kdm and it reinstalled sddm
for some reason (dependencies I assume), and something related to dbus
that kdm needs didn't start until I rebooted again.

This EE error is still showing in /var/log/Xorg.0.log...
 
[   141.146] (WW) Option "xkb_variant" requires a string value
[   141.146] (**) Option "xkb_options" "terminate:ctrl_alt_bksp,"
[   141.168] (EE) RADEON(0): drmmode_do_crtc_dpms cannot get last vblank counter
[   251.871] (II) RADEON(0): EDID vendor "SAM", prod id 2434
[   251.871] (II) RADEON(0): Using EDID range info for horizontal sync
[   251.871] (II) RADEON(0): Using EDID range info for vertical refresh
[   251.871] (II) RADEON(0): Printing DDC gathered Modelines:

but it seems to be non-fatal, despite the fact that its and EE which is odd.

Anyway I'm back in business...

Comment 10 Fedora End Of Life 2017-07-25 20:47:35 UTC
This message is a reminder that Fedora 24 is nearing its end of life.
Approximately 2 (two) weeks from now Fedora will stop maintaining
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Comment 11 Fedora End Of Life 2017-08-08 14:32:26 UTC
Fedora 24 changed to end-of-life (EOL) status on 2017-08-08. Fedora 24 is
no longer maintained, which means that it will not receive any further
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