R7000 wifi chip fried?

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kotika
DD-WRT Novice


Joined: 08 Mar 2022
Posts: 1
PostPosted: Tue Mar 08, 2022 10:12    Post subject: R7000 wifi chip fried? Reply with quote
There was a power outage during the recent snowstorm here, and the R7000 stopped booting, cycling through LED lights, and ending up with orange power LED.
I tried flashing it with nmrpflash, then with serial, and now I can be sure that the firmware is ok. I think the wireless hardware got fried. The boot process ends with a kernel panic of some sort. Could someone confirm this, looking at the log?
If it is so, is there any firmware I could flash that would give me the use of the router without wifi?

Code:

et0: Broadcom BCM47XX 10/100/1000 Mbps Ethefilesystem) readonly on device 31:3.
devtmpfs: mounted
Freeing init memory: 204K
0000 : "crash"
VFS: Mounted root (squashfs filesystem) readonly on device 31:3.
devtmpfs: mounted
Freeing init memory: 204K

Hit ENTER for console...

emf: module license 'Proprietary' taints kernel.
Disabling lock debugging due to kernel taint
et_module_init: passivemode set to 0x0
et_module_init: txworkq set to 0x0
et_module_init: et_txq_thresh set to 0x0
eth0: Broadcom BCM47XX 10/100/1000 Mbps Ethernet Controller 6.37.14.126 (r561982)
eth1: Broadcom BCM47XX 10/100/1000 Mbps Ethernet Controller 6.37.14.126 (r561982)

## Restoring defaults... ##
Restoring wireless vars ...
Restoring wireless vars - done ...
/ # Internal error: Oops: 17 [#1] PREEMPT SMP
last sysfs file: /sys/module/nf_conntrack/parameters/hashsize
module:  wl    bf171000    4389004
module:  dpsta    bf167000    14556
module:  ehci_hcd    bf159000    32414
module:  xhci_hcd    bf146000    51128
module:  vfat    bf13e000    8509
module:  fat    bf12d000    43022
module:  ext4    bf0ec000    221834
module:  crc16    bf0e6000    1007
module:  jbd2    bf0d3000    48945
module:  mbcache    bf0cc000    4599
module:  usb_storage    bf0bd000    34282
module:  sd_mod    bf0b1000    21979
module:  scsi_wait_scan    bf0ab000    416
module:  scsi_mod    bf086000    108722
module:  usbcore    bf062000    103381
module:  nf_nat_pptp    bf05c000    1598
module:  nf_conntrack_pptp    bf056000    3363
module:  nf_nat_proto_gre    bf050000    887
module:  nf_conntrack_proto_gre    bf04a000    3320
module:  nf_nat_ftp    bf044000    1144
module:  nf_conntrack_ftp    bf03d000    4909
module:  nf_nat_h323    bf036000    4761
module:  nf_conntrack_h323    bf028000    33807
module:  et    bf011000    65158
module:  igs    bf009000    11927
module:  emf    bf000000    15397
Modules linked in: wl(P+) dpsta(P) ehci_hcd xhci_hcd vfat fat ext4 crc16 jbd2 mbcache usb_storage sd_mod scsi_wait_scan scsi_mod usbcore nf_nat_pptp nf_conntrack_pptp nf_nat_proto_gre nf_conntrack_proto_gre nf_nat_ftp nf_conntrack_ftp nf_nat_h323 nf_conntrack_h323 et(P) igs(P) emf(P)
CPU: 1    Tainted: P             (2.6.36.4brcmarm #7)
PC is at strspn+0x4/0x6c
LR is at init_module+0x80/0x244 [wl]
pc : [<c015f5f8>]    lr : [<bf577080>]    psr: 60000013
sp : d703bd80  ip : 00000077  fp : 00000000
r10: d703bd88  r9 : 00000000  r8 : 00000000
r7 : d703be88  r6 : d703bd88  r5 : 00000000  r4 : 00000000
r3 : 00000000  r2 : 00000000  r1 : bf4bb548  r0 : 00000000
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 10c53c7d  Table: 8f21004a  DAC: 00000015
Process modprobe (pid: 861, stack limit = 0xd703a270)
Stack: (0xd703bd80 to 0xd703c000)
bd80: 00000000 00000000 d7abe700 d0225ea0 d703a000 d7abe700 00000015 d7961b00
bda0: d7163380 c007eca0 00000000 d0225ea0 d7961b38 d0225ea0 d7abe700 d0225ea0
bdc0: d703a000 d7abe700 00000015 d7961b00 d7163380 c007eca0 00000000 d0225ea0
bde0: d7961b38 c0058920 d7af201c c007ece8 00000000 d0225ea0 d703be74 c02e8e4c
be00: c0039ea0 00000001 c0039ea0 d7abe864 60000013 00000001 00000001 00000003
be20: 00000000 00000000 d703be54 c0039ea0 c0039ea0 d7abe864 c0039ea0 c00390b8
be40: d71ab460 d0225040 00000002 d0225040 00000000 d703a000 f0100100 000003ff
be60: 00000001 c03a6050 d703a000 80000013 d01c6d40 00000001 101ec000 00000000
be80: d02284dc 00000000 d02284d4 00100100 00200200 d02284e0 00000000 c0404f40
bea0: 00000002 d01f9aa0 bf557354 c0407000 d703a000 00000000 bf577000 00000030
bec0: 00000780 c003b5bc 00000000 c00b7b4c 00000485 d719b060 00000000 bf557354
bee0: bf55730c bf557354 bf55730c d7067728 d7067400 00000000 00000780 c008dc74
bf00: bf557318 406a5000 c008c698 bf557440 c0432ee0 d703a000 da3e0ca0 0008a758
bf20: d70031e8 da002000 00484e4c da3ecaf8 da3ec8df da3ff8a8 d6294000 003e6858
bf40: 003f2bf8 00000000 00000000 0000002e 0000002f 00000025 00000029 0000001f
bf60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 c03b33fc
bf80: 00000003 00484e4c 0008a758 00000000 00000080 c003bc68 d703a000 00000000
bfa0: 0008a80e c003bac0 00484e4c 0008a758 40220008 00484e4c 0008a758 0008a708
bfc0: 00484e4c 0008a758 00000000 00000080 00000001 0008b918 00089754 0008a80e
bfe0: be8e0b20 be8e0b10 00014404 40161890 20000010 40220008 00000000 00000000
[<c015f5f8>] (PC is at strspn+0x4/0x6c)
[<c015f5f8>] (strspn+0x4/0x6c) from [<d7abe700>] (0xd7abe700)
Code: e12fff1e e1a00003 e12fff1e e92d0030 (e5d0c000)
---[ end trace ff9348651e174993 ]---
Kernel panic - not syncing: Fatal exception
[<c0042000>] (unwind_backtrace+0x0/0xf8) from [<c02e8758>] (panic+0x74/0x1a4)
[<c02e8758>] (panic+0x74/0x1a4) from [<c003f6f0>] (die+0x1a4/0x1dc)
[<c003f6f0>] (die+0x1a4/0x1dc) from [<c0043140>] (__do_kernel_fault+0x64/0x84)
[<c0043140>] (__do_kernel_fault+0x64/0x84) from [<c00432b0>] (do_page_fault+0x150/0x1ec)
[<c00432b0>] (do_page_fault+0x150/0x1ec) from [<c003b3a4>] (do_DataAbort+0x30/0x9c)
[<c003b3a4>] (do_DataAbort+0x30/0x9c) from [<c03a5f6c>] (__dabt_svc+0x4c/0x60)
Exception stack(0xd703bd38 to 0xd703bd80)
bd20:                                                       00000000 bf4bb548
bd40: 00000000 00000000 00000000 00000000 d703bd88 d703be88 00000000 00000000
bd60: d703bd88 00000000 00000077 d703bd80 bf577080 c015f5f8 60000013 ffffffff
[<c03a5f6c>] (__dabt_svc+0x4c/0x60) from [<c015f5f8>] (strspn+0x4/0x6c)
[<c015f5f8>] (strspn+0x4/0x6c) from [<d7abe700>] (0xd7abe700)
dump_kmsg: dump list lock is held during panic, skipping dump
CPU0: stopping
[<c0042000>] (unwind_backtrace+0x0/0xf8) from [<c003b334>] (do_IPI+0x114/0x154)
[<c003b334>] (do_IPI+0x114/0x154) from [<c03a5fc8>] (__irq_svc+0x48/0xe8)
Exception stack(0xc03e3f78 to 0xc03e3fc0)
3f60:                                                       d0215ea0 d7abdb00
3f80: c03e3fc0 00000000 c03e2000 c04070a8 c03eeb80 c03eeb78 000244f0 413fc090
3fa0: 0000001f 00000000 00000000 c03e3fc0 c003cbe4 c003cbe8 60000013 ffffffff
[<c03a5fc8>] (__irq_svc+0x48/0xe8) from [<c003cbe8>] (default_idle+0x24/0x28)
[<c003cbe8>] (default_idle+0x24/0x28) from [<c003cd88>] (cpu_idle+0x70/0xa4)
[<c003cd88>] (cpu_idle+0x70/0xa4) from [<c0008ca0>] (start_kernel+0x338/0x394)
[<c0008ca0>] (start_kernel+0x338/0x394) from [<00008084>] (0x8084)
Trying to store crash
NVRAM LOG 16384 13661 18513
Could not save crash, partition not clean
Rebooting in 3 seconds..Digital core power voltage set to 1.0V
[/code]
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foz111
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Joined: 01 Oct 2017
Posts: 707
Location: Earth
PostPosted: Wed Mar 09, 2022 9:09    Post subject: Reply with quote
Try another power supply, they do some strange things when psu is going down. (just a thought always worth checking)
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