Created attachment 208831 [details] dmesg log After several hours Wifi stops functioning. ifconfig -a doesn't show wireless interface anymore. Restart is needed to have working wifi again. (I tried unloading iwl-* modules but they were "in use"). I've tested that it's stable on following packages: linux-firmware-20150904.6ebf5d5-1 linux-4.2.5 Stopped working when I upgraded my system to the following versions: linux-firmware-20160113.40e9ae8-1 linux-4.4.5-1 The bug may be somewhere in between. The distribution I use is Arch Linux. lspci: 00:00.0 Host bridge: Intel Corporation Broadwell-U Host Bridge -OPI (rev 09) 00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09) 00:03.0 Audio device: Intel Corporation Broadwell-U Audio Controller (rev 09) 00:16.0 Communication controller: Intel Corporation Wildcat Point-LP MEI Controller #1 (rev 03) 00:19.0 Ethernet controller: Intel Corporation Ethernet Connection (3) I218-V (rev 03) 00:1b.0 Audio device: Intel Corporation Wildcat Point-LP High Definition Audio Controller (rev 03) 00:1c.0 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #2 (rev e3) 00:1c.1 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #3 (rev e3) 00:1d.0 USB controller: Intel Corporation Wildcat Point-LP USB EHCI Controller (rev 03) 00:1f.0 ISA bridge: Intel Corporation Wildcat Point-LP LPC Controller (rev 03) 00:1f.2 SATA controller: Intel Corporation Wildcat Point-LP SATA Controller [AHCI Mode] (rev 03) 00:1f.3 SMBus: Intel Corporation Wildcat Point-LP SMBus Controller (rev 03) 00:1f.6 Signal processing controller: Intel Corporation Wildcat Point-LP Thermal Management Controller (rev 03) 04:00.0 Network controller: Intel Corporation Wireless 7265 (rev 59) dmesg log attached as file.
Please attach kernel log. The dmesg buffer was filled with warnings and I can't see the start of the mess. Thanks
Created attachment 209121 [details] Kernel log after startup Adding kernel log from after reboot.
yes, but I'd like to see the beginning of the errors. The logs you have here are either completely clean, either start when the system is already messed up.
Ok. But the first dmesg is right after Wifi stopped working. ;-) I'll see if kernel log is dumped to disk somewhere…
Created attachment 209471 [details] Full dmesg
Thanks. I'll take a look. Do you use Bluetooth?
Hmm. Looks like I have bluetooth disabled. And I don't use it with any devices.
Thanks - this is good data. I will open a ticket on the firmware team. Would you be able to test Core18 firmware with a backport based driver? https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi/core_release#core_release Note: you have a 7265D device. You can also check newer firmware without changing the driver by testing firmware versions in the table on the same wiki page. 4.4 supports -19.ucode.
I also noticed that the upgrade you made changed a lot of components at the same time: WiFi driver, WiFi firmware and Bluetooth firmware. Can you try to remove iwlwifi-7265D-16.ucode from /lib/firmware (or rename it) and try to see if the problem goes away? You'll use an older firmware then.
I'm going to test by removing iwlwifi-7265D-16.ucode first.
Removing -16 didn't help. I'll test the newest firmware and kernel modules.
It is probably due to the Bluetooth firmware update then. You already have the latest firmware. You need to roll back Bluetooth firmware.
I moved /usr/lib/firmware/intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq from that directory and it seems it helped. After a couple of days I didn't have any more problems with wifi.
Thanks. I already involved the BT team. Thank you.
Created attachment 210471 [details] latest BT firmware - D0 Patch Version: 35 Please try this firmware - thank you.
Did you get a chance to try?
Sorry for the delay. I'll test the firmware now.
I just got yet another stacktrace and not working wifi/BT. Attaching new kernel log.
Created attachment 212701 [details] Full dmesg 2016-04-14
Thanks. I'll inform the BT team.
*** Bug 179901 has been marked as a duplicate of this bug. ***
Created attachment 246251 [details] Core14 - 7260 FW with a potential fix Hello, our firmware team would like to test the firmware attached. Can you please test and report back? Please remember to re-enable the BT firmware if you had disabled it. Thanks!
Any news?
The new firmware you have uploaded says 7260. Will it work with a 7265D? If so, then I could test this next week.
Comment on attachment 246261 [details] New 7265D firmware with a potential fix. Ah, it's a mistake. The 7260 FW will not work with 7265D. I had uploaded the one for 7265D at the same time as Emmanuel uploaded the one for 7260, so I hid my attachment in favor of his. I'm making it visible again so you can try it.
So, how do I confirm whether this firmware will work? 1. Re-installing and booting the latest kernel that my distribution ships and reinstalling the latest firmware files, so that I confirm that the problem (still) happens. 2. Put your iwlwifi-7265D-17.ucode in /lib/firmware/ (and overwrite the existing one). 3. Delete /lib/firmware/iwlwifi-7265D-22.ucode and /lib/firmware/iwlwifi-7265D-21.ucode. 4. Reboot. 5. Try suspend and resume. Is this the correct way to go?
Yes - this looks correct.
Created attachment 247411 [details] "journalctl -b 0 | grep iwl" after resuming
This didn't work for me. The only remaining workarounds are deleting /lib/firmware/intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq or reverting http://kernel.ubuntu.com/git/ubuntu/ubuntu-wily.git/commit/?id=8d193ca26cc28019e760b77830295a0c349d90dc.
We will try to check why reverting this patch actually helps. Thanks for informing us of that.
Sorry, this is still pending on our side. I'm trying to push it forward.
Created attachment 254707 [details] 7260 FW with potential fix Hi, our firmware team has provided another firmware with a potential fix. Can you give it a try? thanks.
Created attachment 254709 [details] 7265D FW with potential fix
I'm sorry, I wasn't able to reproduce this. I tried both with my current setup and with the same software I used when I first encountered the bug.
are you sure you haven't removed the BT firmware?
I've tried it both with my current setup (WiFi: 22.361476.0; Bluetooth: ibt-hw-37.8.10-fw-1.10.3.11.e.bseq; kernel: 4.8.0-37) and with a live USB stick which is close to the software I ran last year (WiFi: 16.242414.0; Bluetooth: ibt-hw-37.8.10-fw-1.10.3.11.e.bseq; kernel: 4.4.0-31). I really don't know why, but it seems to work now.
This is quite possible. The bug seems to be a race between WiFi and BT loading their firmware at the exact same time... Anyone else before I close the bug?
Ok - I am closing the bug here. I'll be happy to hear about other users if they can reproduce on the original firmware and if the new firmware fixed their issue.