Red Hat Bugzilla – Bug 68683
RFE: Please add support for prism2 wireless adapters
Last modified: 2007-04-18 12:44:07 EDT
Description of Problem:
Please add support for the Prism2 drivers found at http://www.linux-wlan.org/
prism2 hardware is supposed to be already supported... can you give model info
on your card that isn't supported?
prism2 is partially supported by the wvlan_cs.o and orinoco_cs.o drivers, but
there are a few prism2 cards like my SMC2632W that are totally non-functional
with either driver. It defaults to wvlan but fails completely. orinoco_cs
appears to work, but fails with tons of transmit errors and completely unable to
get a single UDP packet through. Strangely the SMC2602W PCI adapter (which is a
2632W card in a PLX adapter) works 90% of the time with the orinoco_plx driver.
The drivers at the linux-wlan project much better support my adapters than the
drivers included in Red Hat, as well as other prism2 cards including the USB
versions. Please do consider including those drivers into Limbo.
The Siemens SpeedStream 1022 USB adaptor does not work and neither does the
I forgot to mention that the Wireless HOWTO drivers page
has recently been updated. See section 10 for the linux-wlan drivers. The
HostAP mode drivers in section 12 are also nice, but less critical for my use.
There are RPMs of the previous release of the linux-wlan drivers at
http://prism2.unixguru.raleigh.nc.us/. These integrate well with Red Hat 7.3
and might be a good starting place for getting familiar with the drivers.
Current distro support seems to be limited to a subset of PCMCIA prism2
devices. USB, PCI, PLX, and many PCMCIA adapters based on the prism2 chipset
are only supported by linux-wlan.
I've been using the linux-wlan drivers for awhile, and they seem to be stable.
The only issue I've seen is with high-throughput, and that happens rarely.
As maintainer of the RPMS on the prism2 raleigh site list above,
I would be happy to donate the packages (spec, patches, etc)
to RedHat for them to include it (and of course modify, warp,
and shred it as needed). Feel free to contact me offline to
discuss this as necessary.
I've used these drivers for several revisions on an IBM ThinkPad A30p, with an
integrated Actiontec wlan. Solid code. I works very well. I dig it. It makes
sense to add this support to RH.
Agreed. I'm using these drivers with a Linksys card on an IBM Thinkpad 600E
running Red Hat 7.3, and they are rock solid. I have never experienced a drop
off with these drivers, unlike the drivers I have for my Winbook running WinXP
which drops 3 times during an 8 hour work day.
Including these drivers in the next distro would make me go out and actually
purchase a copy of Red Hat, something I haven't done since 6.2 (but was
tempted to do after using 7.3 for a while).
I use the Prism2 driver here: http://hostap.epitest.fi/ which can also allow
your prism2 card to act as an AP. hostap_pci and hostap_plx could be compiled to
support people with inbuilt prism2 cards such as the one on my thinkpad X22,
independently of the driver you chose for PCMCIA. If you don't use PCMCIA, it
takes 1 minute to compile and install.
*Please* at least supply hostap_pci if nothing else, you'll earn the thanks of
many laptop users with mini-pci 802.11 cards.
I love me too comments; but Red Hat really needs to provide a lot better Prism 2
support out of the box. The wvlan drivers are okay for casual use, but they
don't support all the cards out there nor do they support WEP (which while
broken is at least useful to turn on, if only to keep casual people from
hijacking your bandwidth)
Please consider integrating either a) an updated version of the wvlan driver
with better Prism 2 support or b) the wlan-ng drivers into your kernels builds.
The problem using the wlan-ng drivers right now is that it's hard to keep up
with all the kernel errata.
Linksys WPC11 works well with Tim Miller's wlan-ng packages; stock Red Hat
kernel drivers do not work at all.
Regarding Comment #12, the Linksys WPC11 card can be made to work in Psyche
using orinoco_cs.o with a simple config change. See Bug #76305 .
We aren't adding linux-wlan-ng anytime soon. HostAP is being investigated.
Just a clarification, the HostAP project has no provision for using cards with
this chipset as a *host* (i.e., station), only as an access point.
wlan-ng and hostap don't do the same thing. (although wlan-ng does have some
access point functionality).
The general rule is:
1. If you want to make your prism2 card/machine behave as an access point, you
2. If you want your prism2 card/machine to be a wireless client, you use wlan-ng
It seems as though you guys (RedHat) are not interested in supporting prism2 as
a wireless client, only as an access point...?
> the HostAP project has no provision for using cards with
> this chipset as a *host* (i.e., station), only as an access point.
It certainly does allow the use as client only.
> We aren't adding linux-wlan-ng anytime soon.
Can you explain this, please? I'm sure you have your reasons, but it would be
nice to know what they are.