[Okular-devel] [okular] [Bug 329740] New: Okular hangs in presentation mode when displaying PDFs

[Philipp Hagemeister]

https://bugs.kde.org/show_bug.cgi?id=329740

            Bug ID: 329740
           Summary: Okular hangs in presentation mode when displaying PDFs
    Classification: Unclassified
           Product: okular
           Version: 0.17.3
          Platform: unspecified
                OS: Linux
            Status: UNCONFIRMED
          Severity: crash
          Priority: NOR
         Component: PDF backend
          Assignee: okular-devel at kde.org
          Reporter: phihag at phihag.de

When I run okular to show a PDF file (doesn't matter which,
http://www.debian.org/doc/manuals/debian-faq/debian-faq.en.pdf for example) and
select VIew -> Presentation (or press Ctrl+Shift+P), the screen that okular is
configured to present on is covered by a gray window. This only happens for PDF
files, eps/ps/jpg/txt files do not exhibit the behavior.

I cannot interact with this window (Pressing B, Esc, or clicking does nothing),
and the main
window stops repainting or reacting to mouse or keyboard commands as well.
strace-ing shows

open("/etc/cups/client.conf", O_RDONLY) = -1 ENOENT (No such file or directory)
socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 14
setsockopt(14, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
setsockopt(14, SOL_SOCKET, 0xf /* SO_??? */, [1], 4) = -1 ENOPROTOOPT (Protocol
not available)
setsockopt(14, SOL_TCP, TCP_NODELAY, [1], 4) = 0
fcntl(14, F_SETFD, FD_CLOEXEC)          = 0
fcntl(14, F_GETFL)                      = 0x2 (flags O_RDWR)
fcntl(14, F_SETFL, O_RDWR|O_NONBLOCK)   = 0
connect(14, {sa_family=AF_INET, sin_port=htons(631),
sin_addr=inet_addr("10.125.2.134")}, 16) = -1 EINPROGRESS (Operation now in
progress)
fcntl(14, F_SETFL, O_RDWR)              = 0
poll([{fd=14, events=POLLIN|POLLOUT}], 1, 250) = 0 (Timeout)
poll([{fd=14, events=POLLIN|POLLOUT}], 1, 250) = 0 (Timeout)
poll([{fd=14, events=POLLIN|POLLOUT}], 1, 250) = 0 (Timeout)
poll([{fd=14, events=POLLIN|POLLOUT}], 1, 250) = 0 (Timeout)
poll([{fd=14, events=POLLIN|POLLOUT}], 1, 250) = 0 (Timeout)
....


10.125.2.13 is a printer that my cups seems to have picked up automatically,
but is not reachable at the moment. After 30 seconds (or immediately if I'm not
connected to a network), okular renders the presentation and resumes working.
Printing or Print preview show the same symptoms (minus the grey window). Full
Screen works fine.

While waiting for anything from the network before rendering UI is a bad idea,
I could understand that if I would actually want to print. There should be no
need to contact the printer upon entering presentation mode.

Reproducible: Always

Steps to Reproduce:
1. Open a PDF document
2. Press Ctrl+Shift+P

Actual Results:  
Okular is unresponsible for 30 seconds

Expected Results:  
When entering presentation mode, not contact the printer in the first place.
When entering the printing dialog: Contacting the printer asynchronously or in
another thread.

debian sid

-- 
You are receiving this mail because:
You are the assignee for the bug.