Un kernel parlante…

Ogni tanto il kernel mi parla….

Message from syslogd@ortles at Feb 6 20:01:42 ...
kernel: You have some hardware problem, likely on the PCI bus.

Message from syslogd@ortles at Feb 6 20:01:42 ...
kernel: Dazed and confused, but trying to continue

Message from syslogd@ortles at Feb 6 20:01:42 ...
kernel: Uhhuh. NMI received for unknown reason a0 on CPU 0.

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Windows 7 extreme edition 2020 Preprocessor ultimate businnes

Su Punto informatico si parla già della prossima versione di windows con feature, tradotto, si parla di quello che attualmente abbiamo su Linux.

Io sono convinto di una cosa, o Microsoft affonda Linux oppure prima o poi Windows finirà sviluppato in stile Mac OS X, cioè basato su un kernel (precedentemente) libero aperto.

La rivoluzione “Windows Vista” è costata tanto e fin’ora ha dato poco (in un mese Leopard ha venduto come Windows Vista)…le vecchie rivoluzioni (Windows 95), beh…quelle ce le ricordiamo bene :P

ICH5 module fixing

Yesterday, I resolved a problem of a soundcard with Linux. That PC had a Realtek Integrated soundcard (ICH5) and the rear output didn’t work, to listen audio, it was possible only using headphone in the front microphone.

Here there is the model, using lspci:

00:1f.5 Multimedia audio controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) AC’97 Audio Controller (rev 02)

The solution is quite easy. Time ago I wrote a similar document about my soundcard. The problem is the hardware implementation of soundcard is based only on a driver (that you can install only with windows) and in Linux no information are provided to use correct soundcard’s settings.
So, as I wrote, is necessary to give when module (in this case snd_8x0) is probed, a options. To see which options, you should install source code or documentation of kernel and you find in Documentation/sound/alsa/ALSA-Documentation.txt file.

After found the correct module, you should edit /etc/modprobe.conf as follow:

options snd-intel8x0 ac97_clock=0 ac97_quirk=inv_eapd

The more important option, in this case, is ac97_quirk, and for my soundcard is set to “inv_eapd”, there are many other options, and, if you are not sure, is better to try all. You can find in the “ac97_quirk” section in ALSA-Documentation.txt file.

After this, (this is a particular settings of my soundcard) I choose 4 channels and shared computation (instead indipendent) and it work with rear output.

I’m sorry if this article is not explain so good. I know but I wrote fast. If you find mistakes, tell me by comments.