Pencil doesn't start on Fedora 33.

[voidloop]

Hi!

Pencil doesn't start.

This is the output when I try to launch it from a terminal:

# pencil 
Hardware acceleration disabled for Linux.
Fontconfig warning: "/usr/share/fontconfig/conf.avail/05-reset-dirs-sample.conf", line 6: unknown element "reset-dirs"
Background web-printer started.
Shortcut main service started.
Shortcut: Super+F12 registered
RENDERER started.

but nothing appears to the screen. I also tried to delete ~/.pencil/ but the result is the same.

• Operating system:

# cat /etc/fedora-release 
Fedora release 33 (Thirty Three)

• Pencil version:

# rpm -qa | grep pencil  
pencil-3.1.0.ga-1.x86_64

Thank you.

[fruboes]

Same for ubuntu 18.04, pencil 3.1.0:

Hardware acceleration disabled for Linux.
Background web-printer started.
Shortcut main service started.
Shortcut: Super+F12 registered
RENDERER started.

and nothing happens after this.

[rickhg12hs]

Wading through the deluge won't be fun, but I wonder if whatever is "sticking" can be discovered by looking at the output of strace pencil.

[fruboes]

Weird... running strace pencil resulted in drawing the application window. After this, a direct call (i.e. without strace) is also OK.

[rickhg12hs]

Weird indeed. I have no explanation. You're welcome? 😄

[voidloop]

Nice. Same behavior here: with strace pencil the application window appears! But nothing with the command pencil :-(.

[RuiBaiXYZ]

Did you login with wayland ? If so , I think this is the same issue to #629 .
You can run the following code to check wether wayland mode enabled:
echo $XDG_SESSION_TYPE or echo $DESKTOP_SESSION

[byte-for-byte]

Can confirm behavior of not displaying a window for v3.1.0 on latest OpenSUSE.

It will however sometimes work with work with:
pencil --enable-dev

While not starting up, strace shows a resource unavailable issue and keeps trying uncil CTRL-C is pressed.

poll([{fd=53, events=POLLIN}, {fd=54, events=POLLIN}, {fd=78, events=POLLIN}, {fd=95, events=POLLIN}], 4, 0) = 0 (Timeout)
recvmsg(95, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
recvmsg(95, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
recvmsg(78, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
recvmsg(78, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
recvmsg(95, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
recvmsg(95, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)

any explanation?