机器是ibmx24 带无线网卡，prism芯片，具体型号不清楚。
一直用Dapper，可以通过无线网卡上网。前几天看到feisty正式版发布，不禁心痒痒，下载ubuntu-7.04-alternate-i386.iso准备升级（没有光驱，不能用desktop）。
虽然官方不支持跨版本升级，但还是想尝试一下。经过一番曲折，终于升级成功，发现feisty的速度明显快了（以后再说明升级过程，为还在Dapper下的朋友提供一点经验）。
潜水了一阵子，解决了一些问题。目前还存在无线网卡的问题要请教高手。
Dapper下设置无线网卡很顺利， 系统安装后就有驱动，再编辑/etc/network/interfaces
代码： 全选
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
iface eth0 inet dhcp
# wireless-* options are implemented by the wireless-tools package
wireless-mode managed
wireless-essid TP-LINK
wireless-key1 s:xxxxx
wireless-key s:xxxxx
iface eth1 inet static
address 10.0.0.95
netmask 255.255.0.0
gateway 10.0.0.10
auto eth1
auto eth0
命令ifconfig输出：
代码： 全选
eth0 Link encap:Ethernet HWaddr 00:20:E0:8D:A5:D2
inet addr:192.168.1.100 Bcast:255.255.255.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:52 errors:0 dropped:0 overruns:0 frame:0
TX packets:36 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:18844 (18.4 KiB) TX bytes:7560 (7.3 KiB)
Interrupt:11 Memory:f0000000-f0000fff
eth1 Link encap:Ethernet HWaddr 00:02:8A:21:5F:0E
inet addr:10.0.0.95 Bcast:10.0.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:80 errors:0 dropped:0 overruns:0 frame:0
TX packets:44 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:9059 (8.8 KiB) TX bytes:5466 (5.3 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:74 errors:0 dropped:0 overruns:0 frame:0
TX packets:74 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:5504 (5.3 KiB) TX bytes:5504 (5.3 KiB)代码： 全选
eth0 IEEE 802.11b ESSID:"TP-LINK" Nickname:"Prism I"
Mode:Managed Frequency:2.437 GHz Access Point: 00:14:78:FA:E0:24
Bit Rate:11 Mb/s Sensitivity:1/3
Retry min limit:8 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=92/92 Signal level=5/153 Noise level=107/153
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
命令ifconfig输出：
代码： 全选
eth1 Link encap:Ethernet HWaddr 00:02:8A:21:5F:0E
inet addr:10.0.0.95 Bcast:10.0.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:12738 errors:0 dropped:0 overruns:0 frame:0
TX packets:4266 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:8713925 (8.3 MiB) TX bytes:730628 (713.5 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:30 errors:0 dropped:0 overruns:0 frame:0
TX packets:30 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1908 (1.8 KiB) TX bytes:1908 (1.8 KiB)
wlan0 Link encap:Ethernet HWaddr 00:20:E0:8D:A5:D2
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interrupt:11 Memory:d898c000-d898d000
代码： 全选
wlan0 IEEE 802.11-DS ESSID:"TP-LINK" Nickname:"TP-LINK"
Mode:Managed Frequency:2.437 GHz Access Point: 00:14:78:FA:E0:24
Bit Rate:2 Mb/s Tx-Power:2346 dBm
Retry limit:8 RTS thr:off Fragment thr:off
Link Quality=53/92 Signal level=-47 dBm Noise level=-100 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0代码： 全选
iface wlan0 inet dhcp
wireless-mode managed
wireless-essid TP-LINK
wireless-key s:xxxxx
auto wlan0驱动应该正常加载了，
命令lspci | grep Prism 输出
代码： 全选
02:05.0 Network controller: Intersil Corporation Prism 2.5 Wavelan chipset (rev 01)
代码： 全选
prism2_pci 70784 0
p80211 31884 1 prism2_pci
代码： 全选
wlan0 No scan results
代码： 全选
eth0 Scan completed :
Cell 01 - Address: 00:14:78:FA:E0:24
ESSID:"TP-LINK"
Mode:Master
Frequency:2.437 GHz (Channel 6)
Signal level:76/153 Noise level:7/153
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
12 Mb/s; 24 Mb/s; 36 Mb/s
Cell 02 - Address: 00:18:4D:6C:1E:96
ESSID:"ChinaNet"
Mode:Master
Frequency:2.437 GHz (Channel 6)
Signal level:10/153 Noise level:7/153
Encryption key:off
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
12 Mb/s; 24 Mb/s; 36 Mb/s
Cell 03 - Address: 00:14:78:B1:6A:00
ESSID:"TP-LINK"
Mode:Master
Frequency:2.437 GHz (Channel 6)
Signal level:8/153 Noise level:7/153
Encryption key:off
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
12 Mb/s; 24 Mb/s; 36 Mb/s
Cell 04 - Address: F6:8B:4C:BF:9F:05
ESSID:"hpsetup"
Mode:Ad-Hoc
Frequency:2.457 GHz (Channel 10)
Signal level:13/153 Noise level:7/153
Encryption key:off
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/sDapper的核心启动。或者干脆重装feisty，要是重装也不起作用怎么办，极度郁闷中，请教各位高手要怎么办？
