Dolphin 16.04.3
One thing that was not working with my Gentoo installation was the information for image dimensions (and image data in general) in Dolphin. The resolution is to rebuild Dolphin with the semantic-desktop use flag turned on.
echo "kde-apps/dolphin semantic-desktop" >> /etc/portage/package.use/dolphin |
emerge --ask kde-apps/dolphin |
I thing that this flag should be on by default when building a system with KDE desktop profile or at least mentioned somewhere in the Gentoo wiki.
I recently installed Gentoo GNU/Linux + KDE 5 on my dev machine. One thing that was bugging me was the crappy font rendering in NetBeans.
To relolve the problem, locate your netbeans.conf file. Usually under /etc in your NetBeans installation folder, and append to netbeans_default_options the follwing:
-J-Dswing.aatext=true -J-Dawt.useSystemAAFontSettings=lcd --laf Metal |
This will enable font smoothing in SWING and use default system settings for font smoothing. The last entry –laf Metal sets the preferred UI theme for the IDE, it should be Swing based theme such as Metal or Numbus.
Happy coding 🙂
Latest
emerge --sync emerge --update --deep --newuse @world |
broke “dev-python/cryptography” on my development “server”. By server I mean Intel Celeron at 400Mhz with 768Mb of RAM. Currently running MySQL, Apache, Apache Tomcat, Samba and Deluge.
i686-pc-linux-gnu-gcc -O2 -march=pentium2 -pipe -fomit-frame-pointer -fno-ident -fPIC -I/usr/include/python2.7 -c /var/tmp/portage/dev-python/cryptography-1.1.2/work/cryptography-1.1.2-python2_7/temp.linux-i686-2.7/_openssl.c -o /var/tmp/portage/dev-python/cryptography-1.1.2/work/cryptography-1.1.2-python2_7/temp.linux-i686-2.7/var/tmp/portage/dev-python/cryptography-1.1.2/work/cryptography-1.1.2-python2_7/temp.linux-i686-2.7/_openssl.o /var/tmp/portage/dev-python/cryptography-1.1.2/work/cryptography-1.1.2-python2_7/temp.linux-i686-2.7/_openssl.c:2096:15: error: ‘SSLv2_method’ redeclared as different kind of symbol SSL_METHOD* (*SSLv2_method)(void) = NULL; |
As the build error says dev-python/cryptography is looking for SSLv2. Doing
equery u openssl [ Legend : U - final flag setting for installation] [ : I - package is installed with flag ] [ Colors : set, unset ] * Found these USE flags for dev-libs/openssl-1.0.2h-r2: U I + + asm : Support assembly hand optimized crypto functions (i.e. faster run time) + + bindist : Disable EC algorithms (as they seem to be patented) -- note: changes the ABI - - cpu_flags_x86_sse2 : Use the SSE2 instruction set - - gmp : Add support for dev-libs/gmp (GNU MP library) - - kerberos : Add kerberos support - - rfc3779 : Enable support for RFC 3779 (X.509 Extensions for IP Addresses and AS Identifiers) - - sctp : Support for Stream Control Transmission Protocol - - sslv2 : Support for the old/insecure SSLv2 protocol -- note: not required for TLS/https + + sslv3 : Support for the old/insecure SSLv3 protocol -- note: not required for TLS/https - - static-libs : Build static versions of dynamic libraries as well - - test : Workaround to pull in packages needed to run with FEATURES=test. Portage-2.1.2 handles this internally, so don't set it in make.conf/package.use anymore + + tls-heartbeat : Enable the Heartbeat Extension in TLS and DTLS - - vanilla : Do not add extra patches which change default behaviour; DO NOT USE THIS ON A GLOBAL SCALE as the severity of the meaning changes drastically + + zlib : Add support for zlib (de)compression |
Reveled that OpenSSL is build with ought SSLv2 suport. Adding sslv2 use flag for OpenSSL and rebuilding resolved the problem.
echo "dev-libs/openssl sslv2" > /etc/portage/package.use/openssl |
According to me, this is a bug in “dev-python/cryptography“. The ebuild should do some kind of checking if sslv2 use flag is enabled, or it should introduce use flags controlling the version of ssl used.
On my laptop I use NetworkManager to control network interfaces (LAN/WLAN).
Here is a simple script that will sync your clock with Internet time when LAN or WLAN interface is up and stop ntp-client when the interface is down. Put the script in /etc/NetworkManager/dispatcher.d and make it executable (chmod +x ).
#!/bin/bash IF=$1; STATE=$2; if [ "$IF" = "eth0" ] || [ "$IF" = "wlan0" ] && [ "$STATE" = "up" ]; then /etc/init.d/ntp-client start else /etc/init.d/ntp-client stop fi |
In order for the script to work you need net-misc/ntp package.
First we need Apache Portable Runtime (APR) in order to enable OpenSSL support and generally optimize Tomcat performance. It you are running Gentoo:
emerge -v tomcat-native |
To enable APR edit your server.xml file and add the following line:
<Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" /> |
Depending on your configuration APR listener may be enabled by default.
Next on the Open SSL part. Back in your server.xml file, add an SSL connector:
<connector port="8443" maxHttpHeaderSize="8192" maxThreads="150" minSpareThreads="25" maxSpareThreads="75" enableLookups="false" disableUploadTimeout="true" acceptCount="100" scheme="https" secure="true" SSLEngine="on" SSLCertificateFile="/path/to/your/certificate.crt" SSLCertificateKeyFile="/path/to/your/certificate.key"> </connector> |
If you need an intermediate crt file add the following in your connector directive:
SSLCertificateChainFile="/path/to/your/intermediate.crt" |
Restart Tomcat and you should be up and running with OpenSSL support. APR complete documentation is available here.