Comment 41 for bug 1848921

I've seen this problem too. I purchased a Lenovo ideapad 730s that has the 9260 wifi chipset and it was unusable with ubuntu 19.10, any significant internet download would cause the pointer to freeze and the entire system to come to a halt (but resume working again after 30-45 seconds). I couldn't complete a speedtest.com speed test because the entire system will completely free and the test would fail. A buddy at work who has the same model said he had the problem too (with fedora, not sure which kernel). I installed 19.04 instead and mentioned to him 19.04 works great for me, but he told me even under 19.04 eventually an update will break the wifi and cause this halting behavior and sure enough, after 19.04 worked for weeks and weeks today suddenly I started having the same freezing behavior under 19.04, whenever I do any significant internet activity the entire system halts for 30 or so seconds, mouse pointer disappears and everything.

I copied iwlwifi-9260-th-b0-jf-b0-34.ucode to /lib/firmware but that didn't seem to do anything, maybe there's something I need to do to install it? When I type modinfo iwlwifi |grep 9260
I get
firmware: iwlwifi-9260-th-b0-jf-b0-46.ucode

so maybe it's still using the buggy broken one.

It does seem like I can work around by adding the lines above that include 11n_disable=1 although download performance is pretty poor, 30mg down instead of 300mg down that I was seeing for weeks while it was working. This is such a common chipset, it's frustrating that there's still no real fix for it.