2010/1/21 Zhu Yi <yi.zhu@xxxxxxxxx>: > On Mon, 2009-12-21 at 05:52 -0800, Gábor Stefanik wrote: >> On Mon, Dec 21, 2009 at 3:44 AM, Zhu Yi <yi.zhu@xxxxxxxxx> wrote: >> > On Mon, 2009-12-21 at 10:33 +0800, Guy, Wey-Yi W wrote: >> >> For 4965, 40MHz only supported in g band >> > >> > We don't support 40MHz channels in 2.4G band. See comments in >> > iwl-eeprom.h: >> > >> > * >> > * NOTE: 4965 does not support HT40 channels on 2.4 GHz. >> > */ >> But why does the Windows driver for 4965 support it then? > > Can you dump your 4965 eeprom and see if the channels in band 6 (2.4GHz > 40MHz channel band) are valid? You can use modparam "debug=1" and grep > 'HT40' in dmesg. If the flag is 0x0, the channel is marked as invalid by > EEPROM. The Linux driver simply excludes the HT40 channel in this case. > > Thanks, > -yi Unfortunately I have exchanged my 4965 for an 5300 (it failed recently, and a 5300 was the replacement), so I can no longer provide a dump. However, others can probably produce one, and if needed, I can buy another 4965 to see if it still does 2.4GHz HT40 in Windos. > >> >> -----Original Message----- >> >> From: Valentin Manea [mailto:linux-wireless@xxxxxx] >> >> Sent: Sunday, December 20, 2009 05:38 AM Pacific Standard Time >> >> To: linux-wireless@xxxxxxxxxxxxxxx >> >> Subject: Intel 4965 HT rates >> >> >> >> Hi, >> >> >> >> I'm running compat-wireless-2.6.33-rc1 and iw list shows some confusing HT >> >> capabilities: >> >> Band 1: >> >> HT capabilities: 0x082c >> >> * 20 MHz operation >> >> * SM PS disabled >> >> * 20 MHz short GI >> >> * max A-MSDU len 7935 >> >> >> >> but for 802.11a channels: >> >> Band 2: >> >> HT capabilities: 0x086e >> >> * 20/40 MHz operation >> >> * SM PS disabled >> >> * 20 MHz short GI >> >> * 40 MHz short GI >> >> * max A-MSDU len 7935 >> >> >> >> While I can't tell when this happened, I remember older 2.6.29 releases >> >> supported HT40 for both bands. >> >> The wireless card is an Intel 4965 on a Thinkpad T61. >> >> >> >> >> >> Regards, >> >> Valentin >> >> >> >> -- >> >> To unsubscribe from this list: send the line "unsubscribe linux-wireless" in >> >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> >> N�����r��y���b�X��ǧv�^�){.n�+����{��*ޕ�,�{ay� ʇڙ�,j ��f���h���z� �w��� ���j:+v���w�j�m���� ����zZ+�����ݢj"��!�i >> > >> > >> > -- >> > To unsubscribe from this list: send the line "unsubscribe linux-wireless" in >> > the body of a message to majordomo@xxxxxxxxxxxxxxx >> > More majordomo info at http://vger.kernel.org/majordomo-info.html >> > >> >> >> > > > -- Vista: [V]iruses, [I]ntruders, [S]pyware, [T]rojans and [A]dware. :-) -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
