Dlink-DIR885L 5 GHz/802.11ac radio keeps resetting

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gijswijs
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Joined: 23 Oct 2020
Posts: 3

PostPosted: Fri Oct 23, 2020 1:56    Post subject: Dlink-DIR885L 5 GHz/802.11ac radio keeps resetting Reply with quote
I run DD-WRT v3.0-r44538 std (10/13/20) on a Dlink-DIR885L, running the Broadcom BCM4709 CPU.

The 5 Ghz radio (wl1) keeps giving me problems. These are the logs. Entries like this keep popping up at least every minute, until the radio resets resulting in a odd minute of wireless downtime.

Code:
Oct 22 17:26:29 kernel CONSOLE: 027113.447 wl1: fatal error, reinitializing
Oct 22 17:26:30 kernel br0: port 3(eth2) entered forwarding state
Oct 22 17:26:30 kernel dhd_msgbuf_wait_ioctl_cmplt: resumed on timeout rxcnt_timeout 2
Oct 22 17:26:30 kernel dhd_msgbuf_wait_ioctl_cmplt: timeout > MAX_CNTL_TX_TIMEOUT
Oct 22 17:26:31 dnsmasq-dhcp DHCPREQUEST(br0) 192.168.0.142 24:ee:9a:63:2f:18 
Oct 22 17:26:31 dnsmasq-dhcp DHCPACK(br0) 192.168.0.142 24:ee:9a:63:2f:18 LAPTOP-LFCA49FV
Oct 22 17:26:31 kernel CONSOLE: 027115.619 wl1: link up (wl1)
Oct 22 17:26:32 kernel CONSOLE: 027116.969 wl1: PSM microcode watchdog fired at 119 (seconds). Resetting.
Oct 22 17:26:32 kernel CONSOLE: 027116.969 wl1: reason = psm watchdog at 119 seconds. corerev 65 027116.969 ucode revision 1128.17405 features 0x0406
Oct 22 17:26:32 kernel CONSOLE: 027116.969 psmdebug 0x00c9924a phydebug 0x0 macctl 0x4160403 maccmd 0x15
Oct 22 17:26:32 kernel CONSOLE: psm_brc 0x0000 psm_brc_1 0x0000 M_UCODE_DBGST 0x2
Oct 22 17:26:32 kernel CONSOLE: 027116.969 ifsstat      0x00af 027116.969 ifsstat1     0x00ff 027116.969 txectl       0x4992 027116.969 txestat      0x0405 027116.969 
Oct 22 17:26:32 kernel CONSOLE: 027116.969 txestat2     0x0000 027116.969 rxestat1     0x0000 027116.969 rxestat2     0x0000 027116.969 rcv_frmcnt   0x0000 027116.969 
Oct 22 17:26:32 kernel CONSOLE: 027116.969 rxe_rxcnt    0x0000 027116.969 wepctl       0x0000 027116.969 
Oct 22 17:26:32 kernel CONSOLE: 027116.969 aqmfifordy   0x3f58 027116.969 wepstat      0x0000 027116.969 wep_ivloc    0x0000 027116.969 wep_psdulen  0x1bf9 027116.969 
Oct 22 17:26:32 kernel CONSOLE: 027116.969 aqmfifordyL  0x0000 027116.969 aqmfifordyH  0x0000 027116.969 rxe_errval   0x0000 027116.969 rxe_errmask  0x00ff 027116.969 
Oct 22 17:26:32 kernel CONSOLE: 027116.969 rxe_status3  0x0000 027116.969 
Oct 22 17:26:32 kernel CONSOLE: 027116.969 wlc_dump_aggfifo:
Oct 22 17:26:32 kernel CONSOLE: 027116.969 psm_reg_mux 0xfff0 aqmqmap 0x0 aqmfifo_status 0x4000
Oct 22 17:26:32 kernel CONSOLE: 027116.969 AQM agg params 0x3f3f maxlen hi/lo 0x0 0xffff minlen 0x0 adjlen 0x0
Oct 22 17:26:32 kernel CONSOLE: 027116.969 AQM agg results 0x5000 num 0 len hi/lo 0x0 0x0 BAbitmap(0-3) 0 0 0 0
Oct 22 17:26:32 kernel CONSOLE: 027116.969 AQM agg rdptr 0 mpdu_len 0x1bf9 idx 0x0 info 0x0
Oct 22 17:26:32 kernel CONSOLE: 027116.969 PC :
Oct 22 17:26:32 kernel CONSOLE: 027116.969 0x00ec924a 0x00ec924a 0x00ec924a 0x00c9924a
...
Oct 22 17:26:32 kernel CONSOLE: 027116.969 psm stack_status : 0x0
Oct 22 17:26:32 kernel CONSOLE: 027116.969 psm stack_entries:
Oct 22 17:26:32 kernel CONSOLE: 027116.969 0x0000
...
Oct 22 17:26:32 kernel CONSOLE: 027116.969 wl1: fatal error, reinitializing


In all honesty, this router was giving me problems before I flashed it with dd-wrt, so I suspect it already had issues with the 5 GHz radio. But the logging of the Dlink OEM firmware isn't good enough to do any forensics. (That was *one* of the reasons to make the switch to dd-wrt)

But I can't make heads or tails of the logs above, so if anyone could share his/her thoughts on them, I would appreciate it.
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msoengineer
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Joined: 21 Jan 2017
Posts: 1619
Location: Illinois Moderator

PostPosted: Fri Oct 23, 2020 3:24    Post subject: Reply with quote
Is it possible the wifi chips are overheating?
when's the last time you blew out the router?

I don't know if the router has temp sensors that show up in dd-wrt, but if it does, what's their temperature?

otherwise, it may be time to start from scratch and reset back to facotry settings using the reset button.

Do not restore a backup file...start from scratch. Might be a bad nvram setting causing gremlins.

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gijswijs
DD-WRT Novice


Joined: 23 Oct 2020
Posts: 3

PostPosted: Mon Oct 26, 2020 8:34    Post subject: Reply with quote
msoengineer wrote:
Is it possible the wifi chips are overheating?


I replaced all the heatsinks already with better ones. And put a generous amount of thermal paste on it. The router is clean.

These are the temps if I let both run for a while

Temperatures CPU 73.6 °C / WL0 51.7 °C / WL1 58.7 °C

The load average is completely through the roof if I have my WL1 enabled.

Load Average 3.10, 1.42, 0.55 100%

Mind you, WL1 is configured with an SSID that no one knows or uses. There are no clients trying to connect with WL1.

Resetting to factory settings had no effect.
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