Ubuntu Lucid Lynx

My upgrade from Hardy Heron (8.04) to Lucid Lynx (10.04) went smoothly on desktop PC, but on laptop there were some small issues.

Here are 2 major issues then and how I solved them:

1/ Grub error: boot into text mode only, could not get GUI by startx or xstart command
==> SOLUTION STEPS: fix the old grub (not grub2) menu.lst (or edit boot menu directly)
* Change root partition from by-uuid ("root=UUID=asdf...") to by-path ("root=/dev/sda7")
* Change kernel version from old Hardy (2.6.14-19-generic) to new Lucid (2.6.32-22-generic)


2/ Sound error: could not hear sound, conflict sound system of YouTube/StarDict/VLC/MPlayer
==> SOLUTION STEPS: a little painful
* Run gnome-volume-control to uncheck "Mute" options, try changing sound theme (Ubuntu/NoSound/...)
* Install gnome-alsamixer or pavu, adjust the options and volume
* Resolve the libflashplayer.so location for Flash and libnpjp2.so location for Java RE.
* For StarDict, use aplay as command for playing sound files (usually in /usr/share/WyabdcRealPeopleTTS/ )


Some minor issues may be possible:
- (Gnome) combination (Alt+F2) does not work ==> SOLUTION: enable the "Gnome compatibility" plugin in CompizConfig S Manager (ccsm)
- Postgresql 8.3 startup failed due to memory segmentation ==> SOLUTION: open file postgresql.conf in /etc/postgresql/8.3/main/ and reduce value of the variable shared_buffers (for example 32M -> 16M)
- Some custom launchers' icons are changed ==> SOLUTION: find alternatives in /usr/share/pixmaps/


Hope this helps,