From: "Lincoln D. Durey" <durey@EmperorLinux.com>
To: LKML <linux-kernel@vger.kernel.org>
Cc: EmperorLinux Research <research@EmperorLinux.com>
Subject: IBM T40 _refusing_ to boot with "unauthorized" mini-PCI wifi card
Date: Fri, 30 May 2003 00:47:00 -0400 [thread overview]
Message-ID: <200305300047.00519.durey@EmperorLinux.com> (raw)
We have an IBM T40 ThinkPad (2373-91U), that is _refusing_ to accept an
"unauthorized" mini-PCI WiFi card (from IBM!) in its mini-PCI slot.
Since the T40 usually comes with 802.11a/b cards (no Linux support), we are
getting these systems without wifi cards and were hoping to put prism2 based
cards in them. ("IBM High Rate Wireless" IBM:22P7701, stock card in T30's)
The bios locks the system with this nasty notice:
ERROR
1802: Unauthorized network card is plugged in -
Power off and remove the miniPCI network card.
if you boot with either:
a) an "IBM High Rate Wireless" (22P7701) (T30 wifi prism2)
b) an "Broadcom BCM4301" (802.11b/g unsupported)
It's clearly just an artificial BIOS limitation since we can swap the
card in while waiting at a GRUB prompt (!) and it works perfectly.
This implies that IBM has decided which cards to _allow_ users to put in their
laptops, and in the process is rendering these T40's unable to have working
wifi under Linux. ( preview TPCA ? ! ).
We have of course updated the v1.03 bios (1RET32WW) to v1.04 (1RET33WW)
to no avail, and searched IBM's site which revealed only the same "Error 1802"
translation that the bios gives.
What the Linux community needs from IBM is a BIOS update that does not cripple
these systems. Does anyone know of a BIOS fix or other workaround for this
problem?
It seems uncharacteristic of IBM to simultaneously ship the machine with an
unsupported card, and retard the system's ability to boot with a working
card.
Feel free to call or email me directly if need any more tech details.
-- Lincoln
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