More results of sound and key testing.
Sounds:
It WORKS.
I installed alsa and some mixer apps, such as aumix, in addition to zaurus-soundhack.deb .
In aumix there are three settings:
Pcm, Pcm2 and IGain, which are set to 100, 80 and 80 respectively.
I found the speaker volume was too low. Setting Pcm2 to 90+ makes a difference.
I've installed tons of games today (>1gb installed space!). So far all the games can play sound and music, but I can feel a little bit of delay.
xmms also plays sound through the headphone (but not the speaker), but the app runs so slowly (about 3 times slower than normal) that sound got seriously truncated.
Video performance:
I tried several games, such as Powermanga and Uqm. They play much slower in Debian than in pdaX.
Right-click:
Pressing the kanji key (to the right of Alt) and tap does give right click as desired, at least in the xfce4 panel.
Now I am beginning to feel some sluggishness in the system, especially the multimedia side. Perhaps it's because of the lack of floating point emulation and optimization of the ARM packages.
General feeling:
Then again most other non-multimedia packages run so well, perhaps even better than those in pdaX, such as Iceweasel and Evolution (the big big guys).
Multi-language input method, such as SCIM, UIM and GCIN, all work smoothly. I can enter CJK characters freely in most apps, including GTK and QT apps, and even in the terminal (using Nano, etc). IIRC they are all broken in the new versions of pdaX, and are not easy to fix and build.
I think I will continue to use Debian for now, because it fulfills my productivity needs without the hassles of building everything all on my own.