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--- notes [2018/01/28 13:59] – update Disable Windows 10 Lock Screen josh
+++ notes [2023/03/19 09:49] (current) – add KDE Plasma Task Manager button width josh
@@ Line 314: / Line 314: @@
 ====== Disable media controls on KDE Plasma 5 lockscreen ======
+Finally in Kubuntu 20.04 the settings GUI works to disable this! System Settings -> Workspace -> Workspace Behavior -> Screen Locking -> Appearance -> Media controls.
+Previously:
 See [[https://bugs.kde.org/show_bug.cgi?id=384264]].
 Edit ''/usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/lockscreen/LockScreenUi.qml'' and change ''active: true'' to ''active: false'' in the Loader section for MediaControls.qml.
+====== APT Pinning a PPA Package ======
+For example, after installing the ''ppa:mythbuntu/0.28'' PPA, create the file ''/etc/apt/preferences.d/mythbuntu-0-28'' with the contents:
+<code>
+Package: *
+Pin: release o=LP-PPA-mythbuntu-0.28
+Pin-Priority: 600
+</code>
+See [[https://help.ubuntu.com/community/PinningHowto]] for more info.
+====== Install xubuntu from .iso file on a second drive with GRUB ======
+Boot into GRUB, then open GRUB command line and do:
+<code>
+loopback loop (hd0,msdos1)/xubuntu-18.04-desktop-amd64.iso
+linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=/xubuntu-18.04-desktop-amd64.iso
+initrd (loop)/casper/initrd.lz
+boot
+</code>
+====== Fix Java for Minecraft in Ubuntu 18.04 ======
+See [[https://www.reddit.com/r/Minecraft/comments/8ip8vh/issue_with_minecraft_java_launcher_and_ubuntu_1804/]] and [[https://stackoverflow.com/questions/6784463/error-trustanchors-parameter-must-be-non-empty/50103533#50103533]].
+<code>
+sudo apt install openjdk-8-jdk
+sudo update-alternatives --set java /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java
+/usr/bin/printf '\xfe\xed\xfe\xed\x00\x00\x00\x02\x00\x00\x00\x00\xe2\x68\x6e\x45\xfb\x43\xdf\xa4\xd9\x92\xdd\x41\xce\xb6\xb2\x1c\x63\x30\xd7\x92' > /etc/ssl/certs/java/cacerts
+/var/lib/dpkg/info/ca-certificates-java.postinst configure
+</code>
+====== KDE Plasma Task Manager button width ======
+When turning on Group by Program name but turning off Combine into a single button, the maximum task manager button size decreases.
+I fixed this by editing preferredMaxWidth() in ''/usr/share/plasma/plasmoids/org.kde.plasma.taskmanager/contents/ui/code/layout.js'':
+<code javascript>
+function preferredMaxWidth() {
+    if (tasks.iconsOnly) {
+        if (tasks.vertical) {
+            return tasks.width + verticalMargins();
+        } else {
+            return tasks.height + horizontalMargins();
+        }
+    }
+//    if (plasmoid.configuration.groupingStrategy != 0 && !plasmoid.configuration.groupPopups) {
+//        return preferredMinWidth();
+//    }
+    return Math.floor(preferredMinWidth() * 1.6);
+}
+</code>
+plasmashell can be restarted to see the change take effect with:
+<code>
+killall plasmashell; kstart5 plasmashel
+</code>