Errata ROSA Desktop R1

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Known release problems

Hardware issues

Incorrect screen resolution after boot

If you monitor supports high resolution but a lower one is chosen during the boot, use the following workaround:

1. Install lxrandr

2. Launch it from a command line AS A USER and set necessary resolution from the list appeared

3. Press SAVE to create a config file that will be automatically used in future

When using proprietary NVIDIA or AMD/ATI drivers, artifacts can appear on the screen during the boot

If you see artifacts on your display, press Ctrl+Alt+Backspace to restart X-Server

I have hybrid ATI/Intel graphics and I cannot boot using ATI card

Unfortunately, the full-featured support of this combination is announced but not implemented correctly (yet) in X-Server 13. Use Intel graphics card by disabling AMD/ATI one in BIOS or add "xserver=intel" by editing edit the following line in the /etc/default/grub file (with root privileges):

GRUB_CMDLINE_LINUX_DEFAULT='splash=silent logo.nologo'

We'll get you know when support for this cards combination will be fixed.

Backlight/Brightness workaround for laptop Packard Bell TE11HC-B8302G50Mnks

The FN-F11 and FN-F12 combinaisons doesn't work to adjust brightness/backlight of screen. When you push this combinaisons nothing happens.

Solution: To have a functionnal brightness adjustment you need to put acpi_osi=Linux acpi_backlight=vendor on the grub line with mcc. After a reboot all is ok, you can set brightness up or down with button combo.

Software issues

Applications that use OSS don't work (no /dev/dsp or /dev/audio)

Since old OSS modules are not supported anymore, you should use ossp - free implementation of OSS wrapper in Pulseaudio. Install it using this command:

urpmi ossp

or using the package manager and reboot. Check if the cuse module is loaded:

lsmod | grep cuse

If everything is ok, applications can use OSS as usual..

Cracking sound in Skype

On some hardware configurations, one can get a crackling sound in Skype. To solve this issue, open /etc/pulse/default.pa file with root privileges and find the following line:

load-module module-udev-detect 

replace it with:

load-module module-udev-detect tsched=0

Save changes and reboot. For more information, see #288