Intel dual band wireless ac 7265 does it use 5ghz

WARNING: CPU: 1 PID: 0 at drivers/net/wireless/intel/iwlwifi/pcie/trans.c:2033 iwl_trans_pcie_grab_nic_access+0x1e8/0x220 Timeout waiting for hardware access (CSR_GP_CNTRL 0xffffffff) iwlwifi 0000:03:00.0: Error sending SCAN_OFFLOAD_REQUEST_CMD: enqueue_hcmd failed: -5 iwlwifi 0000:03:00.0: Failed to wake NIC for hcmd Linux imb170 4.19.0-10-amd64 #1 SMP Debian 4.19.132-1 () x86_64 GNU/LinuxД 3:00.0 Network controller: Intel Corporation Wireless 7260 (rev bb)Д¬apabilities: pm msi pciexpress bus_master cap_list ethernet physical wirelessД¬onfiguration: broadcast=yes driver=iwlwifi driverversion=4.19.0-10-amd64 firmware=17.3216344376.0 ip=192.168.1.126 latency=0 link=yes multicast=yes wireless=IEEE 802.11 I would really like to see it working properly under linux. I regard this card as particularly important in that it is the newest and mostД¬apable Intel Wireless card available in the mPCIE form factor. I've looked at a number of wireless cards over the years and I haven't seen this kind of flaky problem before. Same problem seen with the newer kernels and firmware. I'm using Debian Buster with kernel 4.19, though I've also tried 5.6 and 5.7Д«ackported kernels and backported firmware. Of the time I only see half that, 15MB/s and that's without moving anything. When connected at 80MHz BW, maxes out at 30MB/s but that's not consistent. The 5GHz band does not exhibit any firmware crashes but does suffer from highly Reconfigure the AP to force 40MHz BW following which subsequent transfersД¬omplete successfully at ~24MB/s, what I'm expecting from that configuration. If found that if I connect at 2.4GHz/20MHz and make a test transfer, I can then

So far I have found that the problem only occurs when connected at 2.4GHz.ДЄlso, only when connected at 40MHz, 20MHz connections OK, xfer BW ~10MB/s.ДЄdditionally, only when connected at 40MHz at boot. I've only had problems with 7260AC cards, of which I have two, both exhibit the same problem. Thus far I've used Intel 5100, 6205, 200AX, and now 7260AC cards in this machine.

I use one machine as a testbed for wireless cards as it has a mPCIe slot. As far as I can tell a reboot is necessary to clear the fault. The crash that I see is not that ramdom, I can easily trigger it by doingДЄ 1GB curl transfer which won't ever complete as the crash happens to frequently. I'm going to tag along on this bug as I'm seeing likely the same problem.

Intel dual band wireless ac 7265 does it use 5ghz