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Date:      Sat, 02 Apr 2022 20:21:03 +0000
From:      bugzilla-noreply@freebsd.org
To:        wireless@FreeBSD.org
Subject:   [Bug 263015] iwlwifi: huge drop in driver performance on 13.1-RC1
Message-ID:  <bug-263015-21060@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=263015

            Bug ID: 263015
           Summary: iwlwifi: huge drop in driver performance on 13.1-RC1
           Product: Base System
           Version: 13.1-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: wireless
          Assignee: wireless@FreeBSD.org
          Reporter: patovm04@gmail.com

First of all, many thanks to Bjoern Zeeb and the FreeBSD Foundation for
providing initial support for all these new Intel wireless cards.

I was very happy to see iwlwifi driver finally working fast (around 17 mbps
download speed) and stable on 13.1-BETA3.

Since upgrading to 13.1-RC1, I was pleased to see the driver auto-loading
through devmatch, but unfortunately the download speed did drastically decrease
to about 2 mbps.

I don't know if this is a known issue or only affects my card model (Intel
Wireless-AC 9560). Anyway, this is the relevant pciconf output:

class=0x028000 rev=0x00 hdr=0x00 vendor=0x8086 device=0x02f0 subvendor=0x8086
subdevice=0x0034

vendor     = 'Intel Corporation'
device     = 'Comet Lake PCH-LP CNVi WiFi'
class      = network

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