difference between miniPCI and CardBus

[Frank Thieme]

Hi,

I replaced my CardBus WLAN card with an miniPCI one. The CardBus card 
(SMCWCBT-G) has an Atheros 5212 chip 802.11b/g:

 ath_rate_sample: 1.2 (0.9.3.2)
 wifi0: 11b rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
 wifi0: 11g rates: 1Mbps 2Mbps 5.5Mbps 11Mbps 6Mbps 9Mbps 12Mbps 18Mbps 
24Mbps 36Mbps 48Mbps 54Mbps
 wifi0: turboG rates: 6Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
 wifi0: H/W encryption support: WEP AES AES_CCM TKIP
 wifi0: mac 7.9 phy 4.5 radio 5.6
 wifi0: Use hw queue 1 for WME_AC_BE traffic
 wifi0: Use hw queue 0 for WME_AC_BK traffic
 wifi0: Use hw queue 2 for WME_AC_VI traffic
 wifi0: Use hw queue 3 for WME_AC_VO traffic
 wifi0: Use hw queue 8 for CAB traffic
 wifi0: Use hw queue 9 for beacons
 wifi0: Atheros 5212: mem=0xc4000000, irq=11

The MiniPCI card has an Atheros 5212 chip 802.11a/b/g:


 ath_rate_sample: 1.2 (0.9.3.2)
 wifi0: 11a rates: 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
 wifi0: 11b rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
 wifi0: 11g rates: 1Mbps 2Mbps 5.5Mbps 11Mbps 6Mbps 9Mbps 12Mbps 18Mbps 
24Mbps 36Mbps 48Mbps 54Mbps
 wifi0: turboA rates: 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
 wifi0: H/W encryption support: WEP AES AES_CCM TKIP
 wifi0: mac 5.6 phy 4.1 5 GHz radio 1.7 2 GHz radio 2.3
 wifi0: Use hw queue 1 for WME_AC_BE traffic
 wifi0: Use hw queue 0 for WME_AC_BK traffic
 wifi0: Use hw queue 2 for WME_AC_VI traffic
 wifi0: Use hw queue 3 for WME_AC_VO traffic
 wifi0: Use hw queue 8 for CAB traffic
 wifi0: Use hw queue 9 for beacons
 wifi0: Atheros 5212: mem=0xc0200000, irq=11

So far so good - looks nearly the same. But look on powertop:

  18.6% ( 48.3)       <interrupt> : uhci_hcd:usb1, uhci_hcd:usb2, 
uhci_hcd:usb3, yenta, wifi0, eth1

for CardBus vs. 

  59,1% (288,1)       <interrupt> : uhci_hcd:usb1, uhci_hcd:usb2, 
uhci_hcd:usb3, yenta, wifi0, eth1

for MiniPCI.

What can I do?

Bye...Frank