Date: Mon, 5 May 2025 22:56:16 -0700 From: Kevin Oberman <rkoberman@gmail.com> To: Adrian Chadd <adrian@freebsd.org>, "Bjoern A. Zeeb" <bz@freebsd.org>, FreeBSD Wireless <freebsd-wireless@freebsd.org> Subject: Re: Update on AlderLake stuck on 2.4G Message-ID: <CAN6yY1sequUk2sQZJheeJrG3=-GUB5uZQzuBUZUisTobCd8xKQ@mail.gmail.com> In-Reply-To: <CAJ-Vmomi_RRpjkbo5uPHMRKczZEvE=FWX8QkdXThLxxZ-JKqVg@mail.gmail.com> References: <CAN6yY1sV1CEbMtAq1e2H4WYVWVhh8xpk%2Bk8sQSZE=3Y0ZAFXMw@mail.gmail.com> <5p15584o-0o27-7qqr-8sss-9p82q3rsp587@SerrOFQ.bet> <CAJ-VmokMWFYX7ARMMwkG3QWUsqaV5U3Qh6GGKg5UOk%2BUVtMnmw@mail.gmail.com> <CAN6yY1t5sO7poiz7nGQgUF8tiOm0fN12odZm_D38SOczJQt_aw@mail.gmail.com> <CAJ-Vmomi_RRpjkbo5uPHMRKczZEvE=FWX8QkdXThLxxZ-JKqVg@mail.gmail.com>
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[-- Attachment #1 --] Interesting. Looks like a scan is hung.When I start a superuser scan, I log exactly two lines: May 5 22:45:22 ptavv kernel: wlan0: ieee80211_scanreq: vap 0xfffffe0167a47010 iv_state 0x5 (RUN) flags 0x1b duration 0x7fffffff mindwell 0 maxdwell 0 nssid 0 May 5 22:45:22 ptavv kernel: wlan0: ieee80211_swscan_start_scan_locked: active scan already in progress On Mon, May 5, 2025 at 10:14 PM Adrian Chadd <adrian@freebsd.org> wrote: > hi, > > it should start logging stuff to the kernel log! Try looking at the dmesg > output :) > > > We don't have a useful tracing mechanism besides that right now. > > > > -adrian > > > On Mon, 5 May 2025 at 21:59, Kevin Oberman <rkoberman@gmail.com> wrote: > >> On Sun, May 4, 2025 at 1:29 PM Adrian Chadd <adrian@freebsd.org> wrote: >> >>> >>> >>> On Sun, 4 May 2025 at 10:41, Bjoern A. Zeeb <bz@freebsd.org> wrote: >>> >>>> On Sun, 4 May 2025, Kevin Oberman wrote: >>>> >>>> Hi, >>>> >>>> > I have now located and am now running on an ASUS RT-ARCH13 router >>>> connected >>>> > to Comcast. This device claims WiFi5 compliance with 11ac and CCMP. >>>> > >>>> > Still stuck at 11ng and only connects at 2.4G. >>>> > >>>> >> ifconfig wlan0 >>>> > wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 >>>> mtu 1500 >>>> > options=0 >>>> > ether 70:a8:d3:df:3c:de >>>> > inet 192.168.1.5 netmask 0xffffff00 broadcast 192.168.1.255 >>>> > groups: wlan >>>> > ssid babcom channel 11 (2462 MHz 11g ht/20) bssid 4c:ed:fb:37:b0:20 >>>> > regdomain FCC country US authmode WPA2/802.11i privacy ON >>>> > deftxkey UNDEF AES-CCM 2:128-bit txpower 30 bmiss 7 scanvalid 60 >>>> > protmode CTS -ampdu ampdulimit 64k -amsdutx amsdurx shortgi >>>> > -ldpctx ldpcrx -uapsd wme roaming MANUAL >>>> > parent interface: iwlwifi0 >>>> > media: IEEE 802.11 Wireless Ethernet MCS mode 11ng >>>> > status: associated >>>> > nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> >>>> > >>>> > My AP shows up as: 11 54M -51:-96 100 EP HTCAP VHTCAP >>>> VHTOPMODE WME >>>> > ATH RSN >>>> > The 5G SSID does not show up at all, though my phone shows it and >>>> connects >>>> > successfully. Attempts to manually scan return instantly and list scan >>>> > always list the exact same data including S/N, so it does not seem to >>>> > actually scan. >>>> >>> >>> Is there still that scan bug where an interrupted scan never finishes, >>> and thus "ifconfig wlan0 scan" always returns cached scan results? >>> I thought that was fixed years ago. :/ >>> >>> Also, Kevin, is this on iwlwifi? That should be doing offloaded >>> scanning, right bz? So as long as we send a well crafted firmware >>> message with a useful dwell time, it should be seeing the beacons? >>> >>> What dwell time is being configured when doing scanning on iwlwifi? >>> >>> >>> >>> -adrian >>> >>> >>>> >>>> You are #5 reporting this lately of either not seeing the SSID or it >>>> taking ages to show up. I initially started with 1 then 3 people. >>>> Some say another AP n their mesh further away does show up in scan >>>> results but the one next to them does not. >>>> >>>> There is also https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=286493 >>>> (for the "takes ages" to assoc). >>>> >>>> >>>> If you run `ifconifg wlan0 scan` as super user; sometimes you have to >>>> try >>>> 10-15 times; eventually it hangs; then give it some time and if it >>>> doens't return after 30-60s ^c and do a list scan manually. >>>> >>>> There's something really fishy going on somewhere but we don't know yet. >>>> >>>> >>> Hm, can you re-do the scan with scan debugging enabled? >>> >>> wlandebug -i wlan0 +scan >>> >>> let's see what the scan engine sees, in case it's tossing out frames for >>> some reason. >>> >>> >>> >>> -adrian >>> >>> -- >>>> Bjoern A. Zeeb r15:7 >>>> >>>> >> I'm afraid that I am baffled as to running wlandebug. The man page didn't >> help much. >> >> When I run the command, it prints out a single line and exits. Is there >> something I need to do to collect data when I start a scan? >> -- >> Kevin Oberman, Part time kid herder and retired Network Engineer >> E-mail: rkoberman@gmail.com >> PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683 >> > -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkoberman@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683 [-- Attachment #2 --] <div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small">Interesting. Looks like a scan is hung.When I start a superuser scan, I log exactly two lines:</div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small">May 5 22:45:22 ptavv kernel: wlan0: ieee80211_scanreq: vap 0xfffffe0167a47010 iv_state 0x5 (RUN) flags 0x1b duration 0x7fffffff mindwell 0 maxdwell 0 nssid 0<br>May 5 22:45:22 ptavv kernel: wlan0: ieee80211_swscan_start_scan_locked: active scan already in progress<br><br></div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Mon, May 5, 2025 at 10:14 PM Adrian Chadd <<a href="mailto:adrian@freebsd.org">adrian@freebsd.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>hi,</div><div><br></div><div>it should start logging stuff to the kernel log! Try looking at the dmesg output :)</div><div><br></div><div><br></div><div>We don't have a useful tracing mechanism besides that right now.</div><div><br></div><div><br></div><div><br></div><div>-adrian</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, 5 May 2025 at 21:59, Kevin Oberman <<a href="mailto:rkoberman@gmail.com" target="_blank">rkoberman@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small">On Sun, May 4, 2025 at 1:29 PM Adrian Chadd <<a href="mailto:adrian@freebsd.org" target="_blank">adrian@freebsd.org</a>> wrote:</div></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, 4 May 2025 at 10:41, Bjoern A. Zeeb <<a href="mailto:bz@freebsd.org" target="_blank">bz@freebsd.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Sun, 4 May 2025, Kevin Oberman wrote:<br> <br> Hi,<br> <br> > I have now located and am now running on an ASUS RT-ARCH13 router connected<br> > to Comcast. This device claims WiFi5 compliance with 11ac and CCMP.<br> ><br> > Still stuck at 11ng and only connects at 2.4G.<br> ><br> >> ifconfig wlan0<br> > wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500<br> > options=0<br> > ether 70:a8:d3:df:3c:de<br> > inet 192.168.1.5 netmask 0xffffff00 broadcast 192.168.1.255<br> > groups: wlan<br> > ssid babcom channel 11 (2462 MHz 11g ht/20) bssid 4c:ed:fb:37:b0:20<br> > regdomain FCC country US authmode WPA2/802.11i privacy ON<br> > deftxkey UNDEF AES-CCM 2:128-bit txpower 30 bmiss 7 scanvalid 60<br> > protmode CTS -ampdu ampdulimit 64k -amsdutx amsdurx shortgi<br> > -ldpctx ldpcrx -uapsd wme roaming MANUAL<br> > parent interface: iwlwifi0<br> > media: IEEE 802.11 Wireless Ethernet MCS mode 11ng<br> > status: associated<br> > nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL><br> ><br> > My AP shows up as: 11 54M -51:-96 100 EP HTCAP VHTCAP VHTOPMODE WME<br> > ATH RSN<br> > The 5G SSID does not show up at all, though my phone shows it and connects<br> > successfully. Attempts to manually scan return instantly and list scan<br> > always list the exact same data including S/N, so it does not seem to<br> > actually scan.<br></blockquote><div><br></div><div>Is there still that scan bug where an interrupted scan never finishes, and thus "ifconfig wlan0 scan" always returns cached scan results?</div><div>I thought that was fixed years ago. :/</div><div><br></div><div>Also, Kevin, is this on iwlwifi? That should be doing offloaded scanning, right bz? So as long as we send a well crafted firmware</div><div>message with a useful dwell time, it should be seeing the beacons?</div><div><br></div><div>What dwell time is being configured when doing scanning on iwlwifi?</div><div><br></div><div><br></div><div><br></div><div>-adrian</div><div> <br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> <br> You are #5 reporting this lately of either not seeing the SSID or it<br> taking ages to show up. I initially started with 1 then 3 people.<br> Some say another AP n their mesh further away does show up in scan<br> results but the one next to them does not.<br> <br> There is also <a href="https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=286493" rel="noreferrer" target="_blank">https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=286493</a><br>; (for the "takes ages" to assoc).<br> <br> <br> If you run `ifconifg wlan0 scan` as super user; sometimes you have to try<br> 10-15 times; eventually it hangs; then give it some time and if it<br> doens't return after 30-60s ^c and do a list scan manually.<br> <br> There's something really fishy going on somewhere but we don't know yet.<br> <br></blockquote><div><br></div><div>Hm, can you re-do the scan with scan debugging enabled?</div><div><br></div><div>wlandebug -i wlan0 <a class="gmail_plusreply" id="m_-1338673852004747224m_1808883581653320861m_6459306767603830143plusReplyChip-0">+scan</a></div><div><a class="gmail_plusreply" id="m_-1338673852004747224m_1808883581653320861m_6459306767603830143plusReplyChip-0"><br></a></div><div><a class="gmail_plusreply" id="m_-1338673852004747224m_1808883581653320861m_6459306767603830143plusReplyChip-0">let's see what the scan engine sees, in case it's tossing out frames for some reason.</a></div><div><a class="gmail_plusreply" id="m_-1338673852004747224m_1808883581653320861m_6459306767603830143plusReplyChip-0"><br></a></div><div><a class="gmail_plusreply" id="m_-1338673852004747224m_1808883581653320861m_6459306767603830143plusReplyChip-0"><br></a></div><div><a class="gmail_plusreply" id="m_-1338673852004747224m_1808883581653320861m_6459306767603830143plusReplyChip-0"><br></a></div><div><a class="gmail_plusreply" id="m_-1338673852004747224m_1808883581653320861m_6459306767603830143plusReplyChip-0">-adrian</a></div><div><a class="gmail_plusreply" id="m_-1338673852004747224m_1808883581653320861m_6459306767603830143plusReplyChip-0"><br></a> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> -- <br> Bjoern A. Zeeb r15:7<br> <br> </blockquote></div></div> </blockquote></div><div><br clear="all"></div><div style="font-family:tahoma,sans-serif;font-size:small" class="gmail_default">I'm afraid that I am baffled as to running wlandebug. The man page didn't help much.</div><div style="font-family:tahoma,sans-serif;font-size:small" class="gmail_default"><br></div><div style="font-family:tahoma,sans-serif;font-size:small" class="gmail_default">When I run the command, it prints out a single line and exits. Is there something I need to do to collect data when I start a scan?</div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr">Kevin Oberman, Part time kid herder and retired Network Engineer<br>E-mail: <a href="mailto:rkoberman@gmail.com" target="_blank">rkoberman@gmail.com</a><br></div><div>PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683</div></div></div></div></div></div></div></div></div> </blockquote></div> </blockquote></div><div><br clear="all"></div><br><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr">Kevin Oberman, Part time kid herder and retired Network Engineer<br>E-mail: <a href="mailto:rkoberman@gmail.com" target="_blank">rkoberman@gmail.com</a><br></div><div>PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683</div></div></div></div></div></div></div></div>home | help
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