Techniques and Web Technologies
Here is small tip how to set up auto login and Kodi auto start on top of the Fedora 22 LXDE spin – Lightweight X11 Desktop Environment. With settings in two files, after reboot Fedora should run Kodi without login screen. These two configuration files are lxdm.conf and .dmrc in user home directory.
By default, CentOS 6.6 will come with MySQL 5.1 packages. After MySQL upgrade to version 5.6, some old good working SQL inserts start to cause errors. The error message was “data too long” which was a bit strange.
PHP on CentOS 6.6 didn’t have support for mcrypt_get_block_size() function. When something like that happen, next step is to use yum and try to install needed packages. Unfortunately, with default RPM repositories it was not possible and the solution was to add Remi and EPEL repositories.
After migration to Fedora 20 with UEFI (instead of BIOS), making GRUB changes was totally ignored. The problem was with definition of output generated GRUB config file. UEFI system reads settings from new location and that is described in second step.
Fedora 18 and OpenCV version 2.4.3 is not the brightest combination. After upgrading from FC17, python script has stopped working with displayed “SURF missing” error. I decided to downgrade OpenCV to 2.3.1 until this library problem will be resolved. Downgrade process is a little tricky, but finally my python code started to work on FC18 the same as it worked on FC17.
Post describes Fedora Core 18 installation on an old PC with no CDROM and no USB boot option in BIOS. Fortunately, PC had dual boot (Fedora 13 and Windows XP), so existing GRUB was reused to start installation. The solution was to copy netinst.iso image to the USB device and to load new kernel and initial ramdisk from it.
In my case, “Error 15” occurred right after Fedora installation. It seems that I didn’t check somewhere during installation to write GRUB to the /dev/sda disk. After first reboot (while finishing Fedora installation), GRUB displayed “Error 15” message and booting was stopped.
Mplayer Installation procedure is the same as is in my post “How to install mplayer in Fedora Core 12” but with some tweaks at the end. It seems that RPM Fusion repository didn’t create needed symbolic links in /etc/pki/rpm-gpg directory. After symbolic link was created manually, mplayer / vlc installation has been finished successfully.
In this post I will show how to control time access to the Linux desktop. This was needed for my son as a kind of parental control for his Fedora Core 16. Good news is that nothing should be installed because all tools and mechanisms already exist on system. With a little configuration across few files, Linux desktop will be locked for GUI login in defined period of time.
Post explains problem and solution how to add shared windows printer to the Fedora Core 17 Linux. The whole point was in missing samba-client rpm. Solution is simple but it was not so obvious from error log or displayed message in popup.
In short, steps to create USB drive on Linux are: delete all, create partition, set partition type, mark it as active and write changes to disk. After new partition is created, with mkfs command it’s needed to create FAT32 file system. This may sound scary, but the only tricky part is to use correct device name (in my case it was sdg).
With mksdcard tool (that comes in Android SDK) it’s possible to create a blank FAT32 image. After image is created it can be attached and used in emulator. Empty SD is not so useful so here will be shown several ways how to copy content to the SD image.