On 2014-04-27 11:13, Dmitry Grebennikov wrote: > On 27.04.2014 18:04, Bjørn Mork wrote: >> Dmitry Grebennikov <dmitry.ew@xxxxxxxxx> writes: >> >>> Hello, >>> I bought new Intel Wireless 7260 ac + BT card recently and installed >>> to my laptop. >>> Wifi works out of box with iwlwifi module + firmware. >>> But the bluetooth adapter isn't recognized at all. >>> What could be the problem with it? >>> >>> The driver for this card is available and installed (btusb with intel >>> bt firmware). >>> lsusb shows no bluetooth adapter (see attachment). >>> Hcitool scan reports that "Device is not available: No such device" >>> Dmesg and lspci outputs are also attached. >> Yes, doesn't look like there is any USB device is detected at all, so >> drivers don't really matter. >> >>> BIOS is upgraded to the last available update. >> Are you 100% sure that the mini-PCIe slot has USB properly wired up? >> Did the previous module include any USB functions, or do you have some >> other USB mini-PCIe module (e.g. a 3G modem) to test it with? >> >> Does the laptop have any other mini-PCIe slots where you can test the >> 7260 module? >> >> My impression is that laptop vendors don't necessarily wire up and test >> stuff they don't use in their own hardware configurations, like USB >> support in a mini-PCIe slot for intended for PCIe-only wlan cards. >> >> I have installed the same 7260 module in two older laptops with mixed >> results regarding the BT function. In both cases, the 7260 module >> replaced an older PCIe-only wlan module. I had to put a piece of tape >> over the D- and D+ pins to avoid the USB part being detected when >> installing in an Acer 3810tz. Otherwise the USB device was detected, >> but reading the device descripor failed - resulting in annoying timeouts >> both when the BIOS ran and later when Linux booted. I have similar >> issues with my Thinkpad X301, but only occasionally on resume. So I >> haven't yet disabled the USB part... I am hoping to fix the annoying >> serialized probing on resume instead, but haven't gotten around to doing >> that yet. >> >> I am pretty sure that both cases are caused by platform issues specific >> to those laptop models, which were never intended to support any USB >> module in those slots. >> >> But based on these results, I would not be surprised if there are >> laptops out there with mini-PCIe slots completely without USB support. >> That's actually better than the Acer variant IMHO, because you don't >> have to figure out how to physically disable the USB pins yourself. >> >> >> Bjørn > Bjørn, > Thanks for your answer. > > My previous wireless card was Broadcom BCM94313HMGB, also with both wifi > & bt support. > Bluetooth adapter was always detected. > But there were more pins on BCM card than on Intel (some Intel 7260 pins > have ho wire). > > May be the reason is more up-to-date mini-PCIe standard of Intel card, > which is not supported by the PCIe slot of the motherboard ?? > Intel have some information about the PCIe standard requirements here: > http://www.intel.com/support/wireless/wlan/sb/CS-031167.htm > > If so, what could be the workarounds? > I now there are some adapters from mini-PCIe to SATA or USB. > But I'm not sure if the speed of connection would be the same as via > mini-PCIe... > > Dmitry Grebennikov > -- > To unsubscribe from this list: send the line "unsubscribe > linux-bluetooth" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html I'm having pretty much the same issues with a 7260AC on an Acer Aspire V5-131, which came with a Atheros chip that had PCIe Wifi and USB Bluetooth. The original (Atheros) chip that came with it had issues with Bluetooth, but I have tried it in other systems and had no issues with Bluetooth in those, so I think those issues were with Acer's BIOS not letting the OS properly manage the Bluetooth module. I do not think though that the Bluetooth issues I am having with the 7260 are the same though, because I have tried it in other systems (which I know have proper USB wiring in the mini-PCIe slots) and can't get it to work there either. -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
