Xupeng's blog

Apr 7, 2009 - 2 minute read - Comments

Window doesn't redraw correctly when using compiz

Window doesn’t redraw correctly sometimes when using compiz, but if I switch to another window then switch back, it redraws, this problem occurs with any type of windows, it’s annoying. I am using compiz 0.8.2 on my DELL 1420, with a Nvidia 8400M GS video card and Nvidia driver of version 180.44. Once upon a time, I can run compiz on this computer without any problem, but that’s really a very long time ago, with a very old nvidia driver and very old compiz fusion.

Apr 6, 2009 - 2 minute read - Comments

Unmount the unreachable NFS volume

I previously mounted one NFS volume from the NFS server, but now the NFS server is down, then I have problem with “df” command to see the disk space usage information from my computer, now the only thing I want to do is to unmount the unreachable NFS volume. The NFS volume is mounted at /mnt/nfs, when I try to unmount the NFS volume, I am told that it is busy, so I use lsof /mnt/nfs to find out the process using it normally, but lsof gets stuck and it never return the shell prompt to me.

Apr 4, 2009 - 2 minute read - Comments

Pulseaudio is very cool!

I finally moved to pulseaudio after having used alsa/esd for years, pulseauido has been there for many years, but I didn't really learn something about it, I should have tried it if I knew it's so cool! On my Debian unstable, I installed pulseaudio this way: apt-get install pulseaudio libao2 paprefs libpulse-mainloop-glib0 \ pulseaudio-module-jack pavucontrol alsaplayer-alsa pulseaudio-module-hal \ pulseaudio-module-x11 pulseaudio-module-lirc pulseaudio-utils \ pulseaudio-module-zeroconf libasound2-plugins padevchooser paman \ pulseaudio-module-gconf libgconfmm-2.6-1c2 libpulse-browse0 pavumeter \ libglademm-2.

Apr 1, 2009 - 3 minute read - Comments

Upgrade kernel to 2.6.29 for my debian unstable

Two reasons made me want to upgrade my kernel from 2.6.26 to 2.6.29 for my Debian unstable: It's weird that my mobile hard disk make annoying sound even if I "eject" it before I pull out the USB cable, it's the same sound as the hard disk makes when I power off the computer directly without shutting down the OS. I want to mount my ext4 volume created by Fedora Core 10, it contains a lot of data I need.

Apr 1, 2009 - 1 minute read - Comments

Virtualbox stop working after upgrading kernel to 2.6.29

I am using Virtualbox 2.2.0 beta, it worked well before I upgrade my kernel from 2.6.26 to 2.6.29, but it refused to start my vm just after the kernel upgrade: It said "VMMR0.r0 is importing g_SUPGlobalInfoPage which we couldn't find" in its log file, fortunate enough, I got to this page after I searched the web with this error message, there are already many people who met this problem with kernel 2.