tail /var/log/upstart/procps.log
kernel.printk = 4 4 1 7
net.ipv6.conf.all.use_tempaddr = 2
net.ipv6.conf.default.use_tempaddr = 2
error: permission denied on key 'kernel.kptr_restrict'
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.all.rp_filter = 1
net.ipv4.tcp_syncookies = 1
I found bug #1157643 and get
https://bugs.launchpad.net/ubuntu/+source/procps/+bug/1157643/comments/11
worked for me.
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https://bugs.launchpad.net/bugs/1240327
Title:
E: Sub-process
Public bug reported:
[Summary]
gscan2pdf fails to import pdf or any image files.
[Details]
1. Run gscan2pdf --debug from konsole;
2. File - Import - choose any pdf or image file. The waiting bar keeps
moving, otherwise nothing happens. It gives the following error message in the
konsole:
