> I installed the drivers using the below. Problem is the same, black screen on
> boot, but you can shift to another terminal and startx. The nVidia control
> panel shows the driver loaded and reports OK.
I've got exactly the same problem. I'm on F27. I have had a black sddm
screen for 5 weeks (started July 7th 2018) but startx works from a
terminal.
Also on DELL computer but on a Precision 7810 tower. Also with nvidia drivers.
Here is an error I found in journalctl (full log below):
Aug 11 21:03:25 gamma sddm-greeter[2143]: Failed to create OpenGL
context for format QSurfaceFormat(version 2.0, options
QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize 24,
redBufferSize -1, greenBufferSize -1, blueBufferSize -1,
alphaBufferSize -1, stencilBufferSize 8, sam
F
Aug 11 21:03:23 gamma sddm-helper[2135]:
pam_unix(sddm-greeter:session): session opened for user sddm by
(uid=0)
Aug 11 21:03:23 gamma systemd[1]: Created slice User Slice of sddm.
Aug 11 21:03:23 gamma systemd[1]: Starting User Manager for UID 991...
Aug 11 21:03:23 gamma systemd-logind[1582]: New session c1 of user sddm.
Aug 11 21:03:23 gamma systemd[1]: Started Session c1 of user sddm.
Aug 11 21:03:23 gamma audit[2136]: USER_ACCT pid=2136 uid=0
auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0
msg='op=PAM:accounting grantors=pam_unix,pam_localuser acct="sddm"
exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=?
res=success'
Aug 11 21:03:23 gamma audit[2136]: USER_ROLE_CHANGE pid=2136 uid=0
auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0
msg='pam: default-context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
selected-context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
Aug 11 21:03:23 gamma systemd[2136]: pam_unix(systemd-user:session):
session opened for user sddm by (uid=0)
Aug 11 21:03:23 gamma audit[2136]: USER_START pid=2136 uid=0 auid=991
ses=1 subj=system_u:system_r:init_t:s0 msg='op=PAM:session_open
grantors=pam_selinux,pam_selinux,pam_loginuid,pam_keyinit,pam_limits,pam_systemd,pam_unix
acct="sddm" exe="/usr/lib/systemd/systemd" hostname=? addr
Aug 11 21:03:23 gamma systemd[2136]: Reached target Timers.
Aug 11 21:03:23 gamma systemd[2136]: Reached target Paths.
Aug 11 21:03:23 gamma systemd[2136]: Starting D-Bus User Message Bus Socket.
Aug 11 21:03:23 gamma systemd[2136]: Listening on D-Bus User Message Bus Socket.
Aug 11 21:03:23 gamma systemd[2136]: Reached target Sockets.
Aug 11 21:03:23 gamma systemd[2136]: Reached target Basic System.
Aug 11 21:03:23 gamma audit[1]: SERVICE_START pid=1 uid=0
auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0
msg='unit=user@991 comm="systemd" exe="/usr/lib/systemd/systemd"
hostname=? addr=? terminal=? res=success'
Aug 11 21:03:23 gamma systemd[2136]: Reached target Default.
Aug 11 21:03:23 gamma systemd[2136]: Startup finished in 48ms.
Aug 11 21:03:23 gamma systemd[1]: Started User Manager for UID 991.
Aug 11 21:03:23 gamma audit[2135]: USER_START pid=2135 uid=0
auid=4294967295 ses=4294967295
subj=system_u:system_r:xdm_t:s0-s0:c0.c1023 msg='op=PAM:session_open
grantors=pam_unix,pam_systemd acct="sddm"
exe="/usr/libexec/sddm-helper" hostname=? addr=? terminal=:0
res=success'
Aug 11 21:03:24 gamma audit[2143]: AVC avc: denied { map } for
pid=2143 comm="sddm-greeter" path="/dev/nvidiactl" dev="devtmpfs"
ino=40248 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023
tcontext=system_u:object_r:xserver_misc_device_t:s0 tclass=chr_file
permissive=0
Aug 11 21:03:24 gamma sddm-greeter[2143]: QGLXContext: Failed to
create dummy context
Aug 11 21:03:24 gamma sddm-greeter[2143]: Loading
file:///usr/share/sddm/themes/breeze/Main.qml...
Aug 11 21:03:24 gamma sddm-greeter[2143]: QObject: Cannot create
children for a parent that is in a different thread.
(Parent is
SDDM::GreeterApp(0x7ffd9a256a40), parent's thread is
QThread(0x559b5888be90), current thread is QThread(0x559b588f6730)
Aug 11 21:03:24 gamma sddm-greeter[2143]: QObject: Cannot create
children for a parent that is in a different thread.
(Parent is
SDDM::GreeterApp(0x7ffd9a256a40), parent's thread is
QThread(0x559b5888be90), current thread is QThread(0x559b588f6730)
Aug 11 21:03:24 gamma sddm-greeter[2143]: QObject: Cannot create
children for a parent that is in a different thread.
(Parent is
SDDM::GreeterApp(0x7ffd9a256a40), parent's thread is
QThread(0x559b5888be90), current thread is QThread(0x559b588f6730)
Aug 11 21:03:24 gamma sddm-greeter[2143]: QObject: Cannot create
children for a parent that is in a different thread.
(Parent is
SDDM::GreeterApp(0x7ffd9a256a40), parent's thread is
QThread(0x559b5888be90), current thread is QThread(0x559b588f6730)
Aug 11 21:03:24 gamma sddm-greeter[2143]:
QObject::installEventFilter(): Cannot filter events for objects in a
different thread.
Aug 11 21:03:24 gamma sddm-greeter[2143]: QObject: Cannot create
children for a parent that is in a different thread.
(Parent is
SDDM::GreeterApp(0x7ffd9a256a40), parent's thread is
QThread(0x559b5888be90), current thread is QThread(0x559b588f6730)
Aug 11 21:03:24 gamma systemd[2136]: Started D-Bus User Message Bus.
Aug 11 21:03:24 gamma sddm-greeter[2143]: QObject: Cannot create
children for a parent that is in a different thread.
(Parent is
SDDM::GreeterApp(0x7ffd9a256a40), parent's thread is
QThread(0x559b5888be90), current thread is QThread(0x559b588f6730)
Aug 11 21:03:24 gamma sddm-greeter[2143]:
QObject::installEventFilter(): Cannot filter events for objects in a
different thread.
Aug 11 21:03:24 gamma sddm-greeter[2143]: Cannot watch QRC-like path
":/icons/hicolor/index.theme"
Aug 11 21:03:24 gamma dbus-daemon[1461]: [system] Activating via
systemd: service name='org.freedesktop.UDisks2' unit='udisks2.service'
requested by ':1.20' (uid=991 pid=2143 comm="/usr/bin/sddm-greeter
--socket /tmp/sddm-:0-DsEIlN"
label="system_u:system_r:xdm_t:s0-s0:c0.c1023")
Aug 11 21:03:24 gamma systemd[1]: Starting Disk Manager...
Aug 11 21:03:24 gamma udisksd[2150]: udisks daemon version 2.7.6 starting
Aug 11 21:03:24 gamma dbus-daemon[1461]: [system] Successfully
activated service 'org.freedesktop.UDisks2'
Aug 11 21:03:24 gamma audit[1]: SERVICE_START pid=1 uid=0
auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0
msg='unit=udisks2 comm="systemd" exe="/usr/lib/systemd/systemd"
hostname=? addr=? terminal=? res=success'
Aug 11 21:03:24 gamma systemd[1]: Started Disk Manager.
Aug 11 21:03:24 gamma udisksd[2150]: Acquired the name
org.freedesktop.UDisks2 on the system message bus
Aug 11 21:03:24 gamma dbus-daemon[1461]: [system] Activating via
systemd: service name='org.freedesktop.UPower' unit='upower.service'
requested by ':1.20' (uid=991 pid=2143 comm="/usr/bin/sddm-greeter
--socket /tmp/sddm-:0-DsEIlN"
label="system_u:system_r:xdm_t:s0-s0:c0.c1023")
Aug 11 21:03:24 gamma systemd[1]: Starting Daemon for power management...
Aug 11 21:03:24 gamma dbus-daemon[1461]: [system] Successfully
activated service 'org.freedesktop.UPower'
Aug 11 21:03:24 gamma systemd[1]: Started Daemon for power management.
Aug 11 21:03:24 gamma audit[1]: SERVICE_START pid=1 uid=0
auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0
msg='unit=upower comm="systemd" exe="/usr/lib/systemd/systemd"
hostname=? addr=? terminal=? res=success'
Aug 11 21:03:24 gamma sddm-greeter[2143]:
file:///usr/share/sddm/themes/breeze/components/VirtualKeyboard.qml:20:1:
module "QtQuick.VirtualKeyboard" is not installed
Aug 11 21:03:25 gamma sddm-greeter[2143]: QDBusConnection: name
'org.freedesktop.UDisks2' had owner '' but we thought it was ':1.21'
Aug 11 21:03:25 gamma sddm-greeter[2143]: Failed to create OpenGL
context for format QSurfaceFormat(version 2.0, options
QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize 24,
redBufferSize -1, greenBufferSize -1, blueBufferSize -1,
alphaBufferSize -1, stencilBufferSize 8, sam
Aug 11 21:03:25 gamma audit[2143]: ANOM_ABEND auid=4294967295 uid=991
gid=986 ses=4294967295 subj=system_u:system_r:xdm_t:s0-s0:c0.c1023
pid=2143 comm="sddm-greeter" exe="/usr/bin/sddm-greeter" sig=6 res=1
Aug 11 21:03:25 gamma systemd[1]: Created slice
system-systemd\x2dcoredump.slice.
Aug 11 21:03:25 gamma systemd[1]: Started Process Core Dump (PID 2190/UID 0).
Aug 11 21:03:25 gamma audit[1]: SERVICE_START pid=1 uid=0
auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0
msg='unit=systemd-coredump@0-2190-0 comm="systemd"
exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=?
res=success'
Aug 11 21:03:25 gamma sddm-helper[2135]:
pam_unix(sddm-greeter:session): session closed for user sddm
Aug 11 21:03:25 gamma audit[2135]: USER_END pid=2135 uid=0
auid=4294967295 ses=4294967295
subj=system_u:system_r:xdm_t:s0-s0:c0.c1023 msg='op=PAM:session_close
grantors=pam_unix,pam_systemd acct="sddm"
exe="/usr/libexec/sddm-helper" hostname=? addr=? terminal=:0
res=success'
Aug 11 21:03:25 gamma audit[2135]: CRED_DISP pid=2135 uid=0
auid=4294967295 ses=4294967295
subj=system_u:system_r:xdm_t:s0-s0:c0.c1023 msg='op=PAM:setcred
grantors=pam_permit acct="sddm" exe="/usr/libexec/sddm-helper"
hostname=? addr=? terminal=:0 res=success'
Aug 11 21:03:25 gamma sddm[1698]: Auth: sddm-helper exited with 6
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