Unofficial Austrumi Linux for English users forum golf & dvd

A Latvian and english Linux tiny operating system. used by golf & dvd lovers

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#1 2011-10-11 07:15:25

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

WiFi drivers reinstall ? beware of sound drivers corruption.

In SliTaz wifi drivers load and subsequent lsmod which shows the driver files installed; you know that most of the wifi drivers are sound card drivers. In my case its the ESS 1968 drivers and orinoco wifi drivers.

In the meantime, your sound card still works for multimedia output. this means, the order of drivers installed is important. You install multimedia audio controller drivers first, then install wifi drivers last. On boot up, the registry will assign priority of the devices and everything works in an orderly way.

If you had to reinstall audio devices(missing ESS Maestro1 drivers in W2k), then you have to reinstall wifi drivers for the wifi to use the sound card chipset on the wifi motherboard or host. This happened to me, and now Wifi is back on and sound card works too for multimedia displays.

Footmote:
Sound card is IRQ=5 and DMA=2, which will stay on all the time.

Wifi also uses sound drivers, in addition to the wifi functional drivers. Wifi access point often use irq sharing of irq=11.

Its important to keep alsa and wifi irq different. But you also need to make sure that dialup modem uses irq=3 or 4 sometimes irq=11(serialport not used for dialup) for internal dialup modem on any pci slot.

Foonote on wifi traffic conrol:
Wifi access point using irq=11 can be shared by internal dialup modem, when wifi gateway router fails to find websites on DNS server. Which happens often on firefox browser.  firefox will force a dialup connect to remedy the problem. Then Firefox fixes the DNS server on the router and dialup connection is not forced.

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2011-10-11 07:15:25

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#2 2011-10-11 07:23:40

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: WiFi drivers reinstall ? beware of sound drivers corruption.

WiFi drivers will list the hotspots radio signals but not connecting to the hotspot selected. this is often suspected that wifi devuce became defective.

Often, you need to reboot to get alsa sound card installed first, then the wifi ESS host drivers will work. If the sound card chipset is not working correctly, then wifi will fail too

You may have to change your sound card on the motherboard? PCI slot and irq assignment.

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#3 2011-10-11 07:31:10

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: WiFi drivers reinstall ? beware of sound drivers corruption.

Virtual wifi network can be installed on cf cards by SanDisk was introduced at CES LasVegas 2008. Now you can have a flashcard to simulate a hardware Wifi device. But you have to use host sound chipset from sound card.

The demo circuit is just transistors and an antenna wire length of 3/4" long. Or a printed sheet of metalic fresnel antenna loosely coupled to the flash circuit by inductance coupling.

This gives you more understanding of wifi and how it may work for you.

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#4 2011-10-11 10:32:04

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: WiFi drivers reinstall ? beware of sound drivers corruption.

Livecd may also be corrupted(dirt) if you leave it in the cdrom. Anything in the air can coat the groves.

It is easy to clean, Just run running hot water from the faucet. and blot it dry.

To keep the livecd in good condition use paper envelope or sleeves. contacting surfaces prevent any (dirt or oily vapor) deposits to happen.

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#5 2011-12-08 07:42:02

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: WiFi drivers reinstall ? beware of sound drivers corruption.

The alsa sound issue has been a problem, since pulseaudio corrupted it. Removing pulseaudio can restore alsa functions if installed it first, before using other audio drivers and their individual irq or shared irq.

Audio drivers are very useful in providing analog frequency functions in analog devices such as dialup modem or wifi virtual devices.

When we are now promoting free wifi hotspots and wifi traffic control; it is important to stablize alsa multimedia drivers in its irq assignment. Then add any other audio drivers in its own irq. Wifi connection has to be after alsa is installed.

In Linux file switching schemes, often files are shared without regards to irq assignments. Symlinks out of irq order made it worse. In tiny linux this problem is more obvious and can be blacklisted then script correctly.

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