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Intel wi-fi 7260 ac - slow connection

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krita
Posts: 31
Joined: 2012-03-10 13:19

Intel wi-fi 7260 ac - slow connection

#1 Post by krita »

Hi,
I have search the web quite a while about issues with the Intel Dual Band Wireless-AC 7260 Wi-Fi/Bluetooth card. It seems plenty of people have trouble (or at least have had trouble) with it. I do have a working connection, device seems recognized etc, but it works only at a very low/annoying speed.

I'm running Wheezy backports and I have firmware-iwlwifi ver 0.43 installed (from Debian testing).

Below is some system output

Code: Select all

$ uname -v
#1 SMP Debian 3.14.7-1~bpo70+1 (2014-06-21)

$ dmesg | grep iwlwifi
[    1.784455] iwlwifi 0000:03:00.0: irq 43 for MSI/MSI-X
[    1.809630] iwlwifi 0000:03:00.0: firmware: direct-loading firmware iwlwifi-7260-9.ucode
[    1.809713] iwlwifi 0000:03:00.0: loaded firmware version 23.214.9.0 op_mode iwlmvm
[    1.834761] iwlwifi 0000:03:00.0: Detected Intel(R) Dual Band Wireless AC 7260, REV=0x144
[    1.834807] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
[    1.835020] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
[    3.272235] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
[    3.272449] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S


$ lspci -vnn
...
03:00.0 Network controller [0280]: Intel Corporation Device [8086:08b1] (rev 73)
	Subsystem: Intel Corporation Device [8086:4070]
	Flags: bus master, fast devsel, latency 0, IRQ 43
	Memory at f7c00000 (64-bit, non-prefetchable) [size=8K]
	Capabilities: [c8] Power Management version 3
	Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [40] Express Endpoint, MSI 00
	Capabilities: [100] Advanced Error Reporting
	Capabilities: [140] Device Serial Number 0c-8b-fd-ff-ff-73-9c-31
	Capabilities: [14c] Latency Tolerance Reporting
	Capabilities: [154] Vendor Specific Information: ID=cafe Rev=1 Len=014 <?>
	Kernel driver in use: iwlwifi


$ modinfo iwlwifi | grep iwlwifi
filename:       /lib/modules/3.14-0.bpo.1-amd64/kernel/drivers/net/wireless/iwlwifi/iwlwifi.ko
firmware:       iwlwifi-100-5.ucode
firmware:       iwlwifi-1000-5.ucode
firmware:       iwlwifi-135-6.ucode
firmware:       iwlwifi-105-6.ucode
firmware:       iwlwifi-2030-6.ucode
firmware:       iwlwifi-2000-6.ucode
firmware:       iwlwifi-5150-2.ucode
firmware:       iwlwifi-5000-5.ucode
firmware:       iwlwifi-6000g2b-6.ucode
firmware:       iwlwifi-6000g2a-5.ucode
firmware:       iwlwifi-6050-5.ucode
firmware:       iwlwifi-6000-4.ucode
firmware:       iwlwifi-7265-7.ucode
firmware:       iwlwifi-3160-7.ucode
firmware:       iwlwifi-7260-7.ucode
I'm not sure why modinfo iwlwifi only lists firmware iwlwifi-7260-7.ucude while in dmesg you see iwlwifi-7260-9.ucude loads.

Is there something missing you think?

User avatar
llivv
Posts: 5340
Joined: 2007-02-14 18:10
Location: cold storage

Re: Intel wi-fi 7260 ac - slow connection

#2 Post by llivv »

I'll presume you still have wheezys default kernel also installed.
If so boot to it and see if you get the same results for your tests.

also these commands may give more clues
from root or sudo
ifdown -a
ifup -v wlan0
ifup -v eth0
/etc/init.d/networking restart
ref: http://forums.debian.net/viewtopic.php?f=5&t=114958
In memory of Ian Ashley Murdock (1973 - 2015) founder of the Debian project.

krita
Posts: 31
Joined: 2012-03-10 13:19

Re: Intel wi-fi 7260 ac - slow connection

#3 Post by krita »

Yes, the Wheezy stable kernel is also installed but then the Intel 7260 won't be discovered at all :( . That was actually the reason I installed from backports.
I just found an interesting bug report (below) which seems investigating the problem I'm experience. Let's see what happens there.
https://bugzilla.kernel.org/show_bug.cgi?id=77491

For the moment I run the network only at 2,4 GHz band which seems to work much better.

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