thank you for this information, i'll try with external power and see if it works fine.
USB Port hub with external powers should work OK???
Yes but there can still be interference with 2,4 GHz WiFi.
Interference of USB connections with 2.4 GHz WiFi is an issue only for USB 3. The USB port of the Linksys E8450 (probably for this very reason) is USB 2.0 only, ie. only 4 pins, no additional USB 3 SerDes lanes.
5 Likes
Yes, that should solve it.
1 Like
I've started to see crashes in my RT3200 (running 23.05.5 r24106-10cc5fcd00):
root@OpenWrt:~# cat /sys/fs/pstore/dmesg-ramoops-*
Oops#1 Part1
<6>[400158.817830] br-lan: port 1(lan1) entered blocking state
<6>[400158.831153] br-lan: port 1(lan1) entered forwarding state
<6>[400165.660441] br-lan: port 1(lan1) entered disabled state
<6>[400165.660542] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[400168.582429] mt7530-mdio mdio-bus:00 lan1: Link is Up - 1Gbps/Full - flow control rx/tx
<6>[400168.582485] br-lan: port 1(lan1) entered blocking state
<6>[400168.595792] br-lan: port 1(lan1) entered forwarding state
<6>[400169.426259] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[400169.431625] br-lan: port 1(lan1) entered disabled state
<6>[400172.410793] mt7530-mdio mdio-bus:00 lan1: Link is Up - 1Gbps/Full - flow control rx/tx
<6>[400172.410822] br-lan: port 1(lan1) entered blocking state
<6>[400172.424131] br-lan: port 1(lan1) entered forwarding state
<6>[411604.437978] br-lan: port 1(lan1) entered disabled state
<6>[411604.438082] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[411608.540791] mt7530-mdio mdio-bus:00 lan1: Link is Up - 10Mbps/Full - flow control off
<6>[411608.540817] br-lan: port 1(lan1) entered blocking state
<6>[411608.554043] br-lan: port 1(lan1) entered forwarding state
<6>[411610.428878] br-lan: port 1(lan1) entered disabled state
<6>[411610.428981] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[411614.805162] mt7530-mdio mdio-bus:00 lan1: Link is Up - 1Gbps/Full - flow control off
<6>[411614.805192] br-lan: port 1(lan1) entered blocking state
<6>[411614.818325] br-lan: port 1(lan1) entered forwarding state
<6>[411616.653019] br-lan: port 1(lan1) entered disabled state
<6>[411616.653124] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[411619.717705] mt7530-mdio mdio-bus:00 lan1: Link is Up - 1Gbps/Full - flow control rx/tx
<6>[411619.717758] br-lan: port 1(lan1) entered blocking state
<6>[411619.731076] br-lan: port 1(lan1) entered forwarding state
<6>[411631.724981] br-lan: port 1(lan1) entered disabled state
<6>[411631.725092] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[411634.982444] mt7530-mdio mdio-bus:00 lan1: Link is Up - 1Gbps/Full - flow control rx/tx
<6>[411634.982473] br-lan: port 1(lan1) entered blocking state
<6>[411634.995788] br-lan: port 1(lan1) entered forwarding state
<6>[427738.040625] br-lan: port 1(lan1) entered disabled state
<6>[427738.040679] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[427739.647664] mt7530-mdio mdio-bus:00 lan1: Link is Up - 10Mbps/Full - flow control rx/tx
<6>[427739.651544] br-lan: port 1(lan1) entered blocking state
<6>[427739.661123] br-lan: port 1(lan1) entered forwarding state
<6>[427740.795176] br-lan: port 1(lan1) entered disabled state
<6>[427740.795279] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[484817.346306] mt7530-mdio mdio-bus:00 lan1: Link is Up - 10Mbps/Full - flow control off
<6>[484817.346334] br-lan: port 1(lan1) entered blocking state
<6>[484817.359599] br-lan: port 1(lan1) entered forwarding state
<6>[484818.680330] br-lan: port 1(lan1) entered disabled state
<6>[484818.680432] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[484821.636763] mt7530-mdio mdio-bus:00 lan1: Link is Up - 1Gbps/Full - flow control off
<6>[484821.636791] br-lan: port 1(lan1) entered blocking state
<6>[484821.649944] br-lan: port 1(lan1) entered forwarding state
<6>[484825.146803] br-lan: port 1(lan1) entered disabled state
<6>[484825.146904] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[484828.144451] mt7530-mdio mdio-bus:00 lan1: Link is Up - 1Gbps/Full - flow control rx/tx
<6>[484828.144494] br-lan: port 1(lan1) entered blocking state
<6>[484828.157837] br-lan: port 1(lan1) entered forwarding state
<6>[484831.822973] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[484831.828360] br-lan: port 1(lan1) entered disabled state
<6>[484834.799543] mt7530-mdio mdio-bus:00 lan1: Link is Up - 1Gbps/Full - flow control rx/tx
<6>[484834.807411] br-lan: port 1(lan1) entered blocking state
<6>[484834.812891] br-lan: port 1(lan1) entered forwarding state
<6>[484835.611384] br-lan: port 1(lan1) entered disabled state
<6>[484835.611486] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[484838.585493] mt7530-mdio mdio-bus:00 lan1: Link is Up - 1Gbps/Full - flow control rx/tx
<6>[484838.585524] br-lan: port 1(lan1) entered blocking state
<6>[484838.598869] br-lan: port 1(lan1) entered forwarding state
<6>[516001.058626] br-lan: port 1(lan1) entered disabled state
<6>[516001.058729] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[516002.884403] mt7530-mdio mdio-bus:00 lan1: Link is Up - 10Mbps/Full - flow control rx/tx
<6>[516002.884434] br-lan: port 1(lan1) entered blocking state
<6>[516002.897837] br-lan: port 1(lan1) entered forwarding state
<6>[516004.575321] br-lan: port 1(lan1) entered disabled state
<6>[516004.575425] mt7530-mdio mdio-bus:00 lan1: Link is Down
<1>[593594.244792] Unable to handle kernel read from unreadable memory at virtual address 0000000000000001
<1>[593594.253949] Mem abort info:
<1>[593594.256819] ESR = 0x0000000096000005
<1>[593594.260653] EC = 0x25: DABT (current EL), IL = 32 bits
<1>[593594.266057] SET = 0, FnV = 0
<1>[593594.269190] EA = 0, S1PTW = 0
<1>[593594.272407] FSC = 0x05: level 1 translation fault
<1>[593594.277366] Data abort info:
<1>[593594.280323] ISV = 0, ISS = 0x00000005
<1>[593594.284239] CM = 0, WnR = 0
<1>[593594.287284] user pgtable: 4k pages, 39-bit VAs, pgdp=0000000044e49000
<1>[593594.293807] [0000000000000001] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000
<0>[593594.302589] Internal error: Oops: 0000000096000005 [#1] SMP
<7>[593594.308240] Modules linked in: pppoe ppp_async nft_fib_inet nf_flow_table_ipv6 nf_flow_table_ipv4 nf_flow_table_inet rndis_host pppox ppp_generic nft_reject_ipv6 nft_reject_ipv4 nft_reject_inet nft_reject nft_redir nft_quota nft_objref nft_numgen nft_nat nft_masq nft_log nft_limit nft_hash nft_flow_offload nft_fib_ipv6 nft_fib_ipv4 nft_fib nft_ct nft_counter nft_chain_nat nf_tables nf_conntrack_netlink mt7915e mt7615e mt7615_common mt76_connac_lib mt76 mac80211 iptable_mangle iptable_filter ipt_REJECT ip_tables cfg80211 cdc_ether xt_time xt_tcpudp xt_state xt_recent xt_multiport xt_mark xt_mac xt_limit xt_helper xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_LOG xt_CT x_tables usbnet ts_kmp ts_fsm ts_bm slhc sch_cake nfnetlink nf_reject_ipv6 nf_reject_ipv4 nf_nat nf_log_syslog nf_flow_table nf_conncount hwmon compat fuse sch_teql sch_sfq sch_multiq sch_gred sch_fq sch_codel em_text em_nbyte em_meta em_cmp act_simple act_pedit act_csum libcrc32c act_ctinfo
<7>[593594.308441] nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred act_gact ifb ip_tunnel vxlan udp_tunnel ip6_udp_tunnel seqiv md5 leds_gpio xhci_plat_hcd xhci_pci xhci_mtk_hcd xhci_hcd gpio_button_hotplug usbcore usb_common mii
<7>[593594.425795] CPU: 1 PID: 917 Comm: mt76-tx phy0 Tainted: G S 5.15.167 #0
<7>[593594.433792] Hardware name: Linksys E8450 (UBI) (DT)
<7>[593594.438747] pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
<7>[593594.445788] pc : 0xffffffc000bd22c8 [mt7615_common@0000000099475aa1+0x14000]
<7>[593594.452923] lr : 0xffffffc000bdfe7c [mt7615e@00000000433d51f3+0x5000]
<7>[593594.459444] sp : ffffffc008e0b920
<7>[593594.462836] x29: ffffffc008e0b920 x28: fffffffe00000000 x27: 000000000000007f
<7>[593594.470054] x26: 0000000000000000 x25: ffffffc000bad350 x24: ffffff80021960d0
<7>[593594.477270] x23: ffffff800234de30 x22: ffffff8002195da8 x21: ffffff800376d9e8
<7>[593594.484487] x20: ffffff8002195da8 x19: ffffff8003762920 x18: 0000000000000000
<7>[593594.491704] x17: 0000000000000708 x16: ffffffc008cff000 x15: ffffff80037611a6
<7>[593594.498921] x14: ffffffc008cff2d0 x13: 0000000000000002 x12: 000000000000002e
<7>[593594.506138] x11: ffffffc008b2d4e8 x10: 0000000000000001 x9 : 0000000000000000
<7>[593594.513356] x8 : ffffffc008e0bd00 x7 : 0000000049ec2134 x6 : ffffffc000bdfbd0
<7>[593594.520573] x5 : ffffffc008e0baf0 x4 : 0000000000000000 x3 : ffffff80021960d0
<7>[593594.527789] x2 : ffffff800234de30 x1 : 0000000000000000 x0 : 0000000000000000
<7>[593594.535008] Call trace:
<7>[593594.537531] 0xffffffc000bd22c8 [mt7615_common@0000000099475aa1+0x14000]
<7>[593594.544313] 0xffffffc000bdfe7c [mt7615e@00000000433d51f3+0x5000]
<7>[593594.550487] 0xffffffc000bad350 [mt76@00000000c431e310+0x11000]
<7>[593594.556487] 0xffffffc000bb1fd8 [mt76@00000000c431e310+0x11000]
<7>[593594.562488] 0xffffffc000bb3a34 [mt76@00000000c431e310+0x11000]
<7>[593594.568488] 0xffffffc000bb3ba4 [mt76@00000000c431e310+0x11000]
<7>[593594.574488] 0xffffffc000bcbf3c [mt7615_common@0000000099475aa1+0x14000]
<7>[593594.581270] 0xffffffc000bab648 [mt76@00000000c431e310+0x11000]
<7>[593594.587270] 0xffffffc008058e8c
<7>[593594.590488] 0xffffffc00801581c
<0>[593594.593711] Code: 394d643a f9437e60 f9418021 b9403800 (39400439)
<4>[593594.599882] ---[ end trace 7b76ca0d3d36e44c ]---
Panic#2 Part1
<6>[400165.660542] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[400168.582429] mt7530-mdio mdio-bus:00 lan1: Link is Up - 1Gbps/Full - flow control rx/tx
<6>[400168.582485] br-lan: port 1(lan1) entered blocking state
<6>[400168.595792] br-lan: port 1(lan1) entered forwarding state
<6>[400169.426259] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[400169.431625] br-lan: port 1(lan1) entered disabled state
<6>[400172.410793] mt7530-mdio mdio-bus:00 lan1: Link is Up - 1Gbps/Full - flow control rx/tx
<6>[400172.410822] br-lan: port 1(lan1) entered blocking state
<6>[400172.424131] br-lan: port 1(lan1) entered forwarding state
<6>[411604.437978] br-lan: port 1(lan1) entered disabled state
<6>[411604.438082] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[411608.540791] mt7530-mdio mdio-bus:00 lan1: Link is Up - 10Mbps/Full - flow control off
<6>[411608.540817] br-lan: port 1(lan1) entered blocking state
<6>[411608.554043] br-lan: port 1(lan1) entered forwarding state
<6>[411610.428878] br-lan: port 1(lan1) entered disabled state
<6>[411610.428981] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[411614.805162] mt7530-mdio mdio-bus:00 lan1: Link is Up - 1Gbps/Full - flow control off
<6>[411614.805192] br-lan: port 1(lan1) entered blocking state
<6>[411614.818325] br-lan: port 1(lan1) entered forwarding state
<6>[411616.653019] br-lan: port 1(lan1) entered disabled state
<6>[411616.653124] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[411619.717705] mt7530-mdio mdio-bus:00 lan1: Link is Up - 1Gbps/Full - flow control rx/tx
<6>[411619.717758] br-lan: port 1(lan1) entered blocking state
<6>[411619.731076] br-lan: port 1(lan1) entered forwarding state
<6>[411631.724981] br-lan: port 1(lan1) entered disabled state
<6>[411631.725092] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[411634.982444] mt7530-mdio mdio-bus:00 lan1: Link is Up - 1Gbps/Full - flow control rx/tx
<6>[411634.982473] br-lan: port 1(lan1) entered blocking state
<6>[411634.995788] br-lan: port 1(lan1) entered forwarding state
<6>[427738.040625] br-lan: port 1(lan1) entered disabled state
<6>[427738.040679] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[427739.647664] mt7530-mdio mdio-bus:00 lan1: Link is Up - 10Mbps/Full - flow control rx/tx
<6>[427739.651544] br-lan: port 1(lan1) entered blocking state
<6>[427739.661123] br-lan: port 1(lan1) entered forwarding state
<6>[427740.795176] br-lan: port 1(lan1) entered disabled state
<6>[427740.795279] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[484817.346306] mt7530-mdio mdio-bus:00 lan1: Link is Up - 10Mbps/Full - flow control off
<6>[484817.346334] br-lan: port 1(lan1) entered blocking state
<6>[484817.359599] br-lan: port 1(lan1) entered forwarding state
<6>[484818.680330] br-lan: port 1(lan1) entered disabled state
<6>[484818.680432] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[484821.636763] mt7530-mdio mdio-bus:00 lan1: Link is Up - 1Gbps/Full - flow control off
<6>[484821.636791] br-lan: port 1(lan1) entered blocking state
<6>[484821.649944] br-lan: port 1(lan1) entered forwarding state
<6>[484825.146803] br-lan: port 1(lan1) entered disabled state
<6>[484825.146904] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[484828.144451] mt7530-mdio mdio-bus:00 lan1: Link is Up - 1Gbps/Full - flow control rx/tx
<6>[484828.144494] br-lan: port 1(lan1) entered blocking state
<6>[484828.157837] br-lan: port 1(lan1) entered forwarding state
<6>[484831.822973] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[484831.828360] br-lan: port 1(lan1) entered disabled state
<6>[484834.799543] mt7530-mdio mdio-bus:00 lan1: Link is Up - 1Gbps/Full - flow control rx/tx
<6>[484834.807411] br-lan: port 1(lan1) entered blocking state
<6>[484834.812891] br-lan: port 1(lan1) entered forwarding state
<6>[484835.611384] br-lan: port 1(lan1) entered disabled state
<6>[484835.611486] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[484838.585493] mt7530-mdio mdio-bus:00 lan1: Link is Up - 1Gbps/Full - flow control rx/tx
<6>[484838.585524] br-lan: port 1(lan1) entered blocking state
<6>[484838.598869] br-lan: port 1(lan1) entered forwarding state
<6>[516001.058626] br-lan: port 1(lan1) entered disabled state
<6>[516001.058729] mt7530-mdio mdio-bus:00 lan1: Link is Down
<6>[516002.884403] mt7530-mdio mdio-bus:00 lan1: Link is Up - 10Mbps/Full - flow control rx/tx
<6>[516002.884434] br-lan: port 1(lan1) entered blocking state
<6>[516002.897837] br-lan: port 1(lan1) entered forwarding state
<6>[516004.575321] br-lan: port 1(lan1) entered disabled state
<6>[516004.575425] mt7530-mdio mdio-bus:00 lan1: Link is Down
<1>[593594.244792] Unable to handle kernel read from unreadable memory at virtual address 0000000000000001
<1>[593594.253949] Mem abort info:
<1>[593594.256819] ESR = 0x0000000096000005
<1>[593594.260653] EC = 0x25: DABT (current EL), IL = 32 bits
<1>[593594.266057] SET = 0, FnV = 0
<1>[593594.269190] EA = 0, S1PTW = 0
<1>[593594.272407] FSC = 0x05: level 1 translation fault
<1>[593594.277366] Data abort info:
<1>[593594.280323] ISV = 0, ISS = 0x00000005
<1>[593594.284239] CM = 0, WnR = 0
<1>[593594.287284] user pgtable: 4k pages, 39-bit VAs, pgdp=0000000044e49000
<1>[593594.293807] [0000000000000001] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000
<0>[593594.302589] Internal error: Oops: 0000000096000005 [#1] SMP
<7>[593594.308240] Modules linked in: pppoe ppp_async nft_fib_inet nf_flow_table_ipv6 nf_flow_table_ipv4 nf_flow_table_inet rndis_host pppox ppp_generic nft_reject_ipv6 nft_reject_ipv4 nft_reject_inet nft_reject nft_redir nft_quota nft_objref nft_numgen nft_nat nft_masq nft_log nft_limit nft_hash nft_flow_offload nft_fib_ipv6 nft_fib_ipv4 nft_fib nft_ct nft_counter nft_chain_nat nf_tables nf_conntrack_netlink mt7915e mt7615e mt7615_common mt76_connac_lib mt76 mac80211 iptable_mangle iptable_filter ipt_REJECT ip_tables cfg80211 cdc_ether xt_time xt_tcpudp xt_state xt_recent xt_multiport xt_mark xt_mac xt_limit xt_helper xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_LOG xt_CT x_tables usbnet ts_kmp ts_fsm ts_bm slhc sch_cake nfnetlink nf_reject_ipv6 nf_reject_ipv4 nf_nat nf_log_syslog nf_flow_table nf_conncount hwmon compat fuse sch_teql sch_sfq sch_multiq sch_gred sch_fq sch_codel em_text em_nbyte em_meta em_cmp act_simple act_pedit act_csum libcrc32c act_ctinfo
<7>[593594.308441] nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred act_gact ifb ip_tunnel vxlan udp_tunnel ip6_udp_tunnel seqiv md5 leds_gpio xhci_plat_hcd xhci_pci xhci_mtk_hcd xhci_hcd gpio_button_hotplug usbcore usb_common mii
<7>[593594.425795] CPU: 1 PID: 917 Comm: mt76-tx phy0 Tainted: G S 5.15.167 #0
<7>[593594.433792] Hardware name: Linksys E8450 (UBI) (DT)
<7>[593594.438747] pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
<7>[593594.445788] pc : 0xffffffc000bd22c8 [mt7615_common@0000000099475aa1+0x14000]
<7>[593594.452923] lr : 0xffffffc000bdfe7c [mt7615e@00000000433d51f3+0x5000]
<7>[593594.459444] sp : ffffffc008e0b920
<7>[593594.462836] x29: ffffffc008e0b920 x28: fffffffe00000000 x27: 000000000000007f
<7>[593594.470054] x26: 0000000000000000 x25: ffffffc000bad350 x24: ffffff80021960d0
<7>[593594.477270] x23: ffffff800234de30 x22: ffffff8002195da8 x21: ffffff800376d9e8
<7>[593594.484487] x20: ffffff8002195da8 x19: ffffff8003762920 x18: 0000000000000000
<7>[593594.491704] x17: 0000000000000708 x16: ffffffc008cff000 x15: ffffff80037611a6
<7>[593594.498921] x14: ffffffc008cff2d0 x13: 0000000000000002 x12: 000000000000002e
<7>[593594.506138] x11: ffffffc008b2d4e8 x10: 0000000000000001 x9 : 0000000000000000
<7>[593594.513356] x8 : ffffffc008e0bd00 x7 : 0000000049ec2134 x6 : ffffffc000bdfbd0
<7>[593594.520573] x5 : ffffffc008e0baf0 x4 : 0000000000000000 x3 : ffffff80021960d0
<7>[593594.527789] x2 : ffffff800234de30 x1 : 0000000000000000 x0 : 0000000000000000
<7>[593594.535008] Call trace:
<7>[593594.537531] 0xffffffc000bd22c8 [mt7615_common@0000000099475aa1+0x14000]
<7>[593594.544313] 0xffffffc000bdfe7c [mt7615e@00000000433d51f3+0x5000]
<7>[593594.550487] 0xffffffc000bad350 [mt76@00000000c431e310+0x11000]
<7>[593594.556487] 0xffffffc000bb1fd8 [mt76@00000000c431e310+0x11000]
<7>[593594.562488] 0xffffffc000bb3a34 [mt76@00000000c431e310+0x11000]
<7>[593594.568488] 0xffffffc000bb3ba4 [mt76@00000000c431e310+0x11000]
<7>[593594.574488] 0xffffffc000bcbf3c [mt7615_common@0000000099475aa1+0x14000]
<7>[593594.581270] 0xffffffc000bab648 [mt76@00000000c431e310+0x11000]
<7>[593594.587270] 0xffffffc008058e8c
<7>[593594.590488] 0xffffffc00801581c
<0>[593594.593711] Code: 394d643a f9437e60 f9418021 b9403800 (39400439)
<4>[593594.599882] ---[ end trace 7b76ca0d3d36e44c ]---
<0>[593594.615583] Kernel panic - not syncing: Oops: Fatal exception in interrupt
<2>[593594.622540] SMP: stopping secondary CPUs
<0>[593594.626544] Kernel Offset: disabled
<0>[593594.630109] CPU features: 0x0,00001000,00000802
<0>[593594.634719] Memory Limit: none
root@OpenWrt:~#
Any ideas?
Looks like a NULL pointer dereference in the wifi driver...
the same (OpenWrt 23.05.5 r24106)
[257388.000946] mt7530-mdio mdio-bus:00 lan3: Link is Up - 1Gbps/Full - flow control rx/tx
[257388.000989] br-lan: port 3(lan3) entered blocking state
[257388.014320] br-lan: port 3(lan3) entered forwarding state
[294196.189262] br-lan: port 3(lan3) entered disabled state
[294196.189323] mt7530-mdio mdio-bus:00 lan3: Link is Down
[294222.579699] mt7530-mdio mdio-bus:00 lan3: Link is Up - 100Mbps/Full - flow control off
[294222.579735] br-lan: port 3(lan3) entered blocking state
[294222.593055] br-lan: port 3(lan3) entered forwarding state
[294252.968877] br-lan: port 3(lan3) entered disabled state
[294252.968933] mt7530-mdio mdio-bus:00 lan3: Link is Down
[294254.680149] mt7530-mdio mdio-bus:00 lan3: Link is Up - 10Mbps/Full - flow control off
[294254.680194] br-lan: port 3(lan3) entered blocking state
[294254.693456] br-lan: port 3(lan3) entered forwarding state
[294296.468112] br-lan: port 3(lan3) entered disabled state
[294296.468181] mt7530-mdio mdio-bus:00 lan3: Link is Down
[294299.425041] mt7530-mdio mdio-bus:00 lan3: Link is Up - 1Gbps/Full - flow control off
[294299.425091] br-lan: port 3(lan3) entered blocking state
[294299.438242] br-lan: port 3(lan3) entered forwarding state
[294306.057338] br-lan: port 3(lan3) entered disabled state
[294306.057377] mt7530-mdio mdio-bus:00 lan3: Link is Down
[294309.125619] mt7530-mdio mdio-bus:00 lan3: Link is Up - 1Gbps/Full - flow control rx/tx
[294309.125671] br-lan: port 3(lan3) entered blocking state
[294309.138997] br-lan: port 3(lan3) entered forwarding state
I see it about once a week. Wonder if this has been fixed in 24.XX?
Should be the same issue as what I have reported here.
Edit:
To add on, this only affects the 2.4GHz WiFi interface as issue is with the mt7615e driver code.
So far, I have not seen such crashes with the 5GHz WiFi interface.
Edit 2:
This issue is still present in the master/main branch code, so it'll likely still be present in 24.x releases.
1 Like
Could it be related to WDS or lack of STP? I use the former and not the latter (when is STP needed?). What's odd for me is that it just started happening without configuration change having not occurred before for months or years. The only change I can think of is one or two new WiFi devices. Now I see this hard crash about once every few days.
The specific thing that triggered crash this morning was PC connected via LAN and also connecting to WiFi 2.4 GHz (because I wanted to try to extend Zoom session to TV).
1 Like
IMHO, it is unlikely due to either.
STP (Spanning Tree Protocol) is really only needed if you have multiple LAN switches connected. Its main purpose is to prevent a broadcast storm if you accidentally connect your network into a routing loop.
Back to the crash, my suspicion is that this is likely connected to the situation where a 2.4GHz WiFi client is repeatedly connecting and disconnecting, maybe due to weak signal, and this likely causes a corruption of the mt76 driver data structure.
The reason why I suspected it may also be connected to hostapd was because there was an upgrade to hostapd code to a newer version sometime in Sep 2024, and since then I observed quite a few hostapd related issues.
2 Likes
Would you expect disabling any 2.4 GHz AP's on my main router to resolve this issue (I can leave 2.4 AP's on my downstream WDS-connected routers?)?
@daniel are you planning to issue a new installer when the official 24.XX release arrives? If not, I may as well run the latest installer now to prep my router for it.
1 Like
Yes, disabling 2.4GHz interface for your RT3200/E8450 will work-around the crash as the mt7615e driver will not be used.
So far, I have not seen any crash from the mt7915e/5GHz WiFi interface.
1 Like
Is it enough to disable any 2.4 AP's in LuCi?
1 Like
Yesterday I switched on my RT3200 after 6 months to use it as WDS client connected to Zyxel T-56 as WDS AP. It was negotiating very low speeds in the range of 400 megabits only at 80 Mhz ( it could not negotiate 160 Mhz - 2 meters from the WDS AP) in the 5 Ghz. However by disabling the AP mode on RT3200 in the WDS connection and leaving only the WDS client mode - I got 2+ Gigabit connection ( not sue on 80 or 160 Mhz), however I confirm that something doesn't work. I tested with the latest snapshot and with RC7.
Kr
K
PS: Found this reported issue. Seems the same as mine :https://github.com/openwrt/openwrt/issues/17530
I understood from this thread way back that 160MHz doesn’t work properly on these devices owing to hardware limitations.
2 Likes
That's interesting.
Does this bug kill the following plan?
Current situation: Linksys E8450 is the main router upstrairs, which also acts as a WDS AP. Netgear WAX202 is a WDS repeater downstairs, with a multimedia PC connected via Ethernet and bridged to the WDS client. GL.INET Flint 2 is unused (but was successfully tested as another repeater).
Proposed setup: GL.INET Flint 2 takes the place of the main router, which should also act as a WDS AP (i.e., completely takes over the current role of Linksys E8450). Linksys E8450 goes downstairs and becomes a WDS repeater, and the multimedia PC gets connected to it. Netgear WAX202 becomes unused.
Well I think your setup will work, as you will not use RT3200 as a AP too, but only use it with ethernet. My test showed more than 2 Gigabits connection ( I can not remember if it connected to 80 or 160 Mhz).
However I used the RT3200 as WDS client and AP at the same time with 160 MHz without any problem before, but it was a long time ago.
So what I am planning to do is to test with 24.10 rc1 first and then with any Snapshot between the OKD fix and 24.10 - unfortunatly we can not use 23.05 as this will break the router.
I had the same plan as you replace Cudy Wr3000 with RT3200 as WDS Client but also as AP in order to see if my network will become better with 4 spatial stream router than 2...but...
I
You misunderstood - the E8450 will be used both as a WDS client (5 GHz only) and as an AP (both bands).