Support for Linksys MR7500

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BrainSlayer
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PostPosted: Sun Jan 12, 2025 20:18    Post subject: Reply with quote
lexridge wrote:
BrainSlayer wrote:
this device should have more than 512mb ram with 3 wifi cards for instance.

According to the Linksys website, this device has 2GB DDR3L RAM.
https://support.linksys.com/kb/article/953-en/

I'll keep an eye out for a pair of mx8500s too Wink


i know. but according to bootlogs and the fcc pictures it has 512mb

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Zyxx
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PostPosted: Mon Jan 13, 2025 13:26    Post subject: Reply with quote
Will get my hands on a MR7500 in a few days.

Am going to figure out the serial connection and can provide logs and testing results after this, too.
seth_space
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PostPosted: Mon Jan 13, 2025 13:35    Post subject: Reply with quote
Sorry missed the question..
i want to flash the firmware, but place correct link here.
Currently running PPIGS nss openwrt firmware. Any special action to flash this dd-wrt one?

cheaper one in germany:
https://www.amazon.de/dp/B0BJ8K3ZF3/
ho1Aetoo
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PostPosted: Mon Jan 13, 2025 14:02    Post subject: Reply with quote
Interesting but only 512MB Ram ... well

(confirmed by various sources, FCC, SNB)

https://www.smallnetbuilder.com/wireless/wireless-reviews/linksys-mr7500-hydra-pro-6e-reviewed/

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seth_space
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PostPosted: Mon Jan 13, 2025 14:20    Post subject: Reply with quote
root@OpenWrt:~# free -m
total used free shared buff/cache available
Mem: 414588 232548 88992 1304 93048 129824
Swap: 0 0 0
kernel-panic69
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PostPosted: Mon Jan 13, 2025 14:45    Post subject: Reply with quote
seth_space wrote:
Sorry missed the question..
i want to flash the firmware, but place correct link here.
Currently running PPIGS nss openwrt firmware. Any special action to flash this dd-wrt one?

Probably best to recover to stock firmware first. Asking the question makes it obvious that this is going to be an exercise in how quick we get a brick.

MR7500 factory-to-ddwrt.img test image

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ho1Aetoo
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PostPosted: Mon Jan 13, 2025 14:52    Post subject: Reply with quote
@seth_space

Free = 88MB

That's not much and depends on how many services are running on the device, etc.
It may work but a 9 year old r7800 has just as much RAM
Sorry, I didn't want to start a discussion because you can't change it anyway.

But Linksys claims 2GB ...

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VLAN configuration via GUI - 2 CPU ports (R7800, EA8500 etc)

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seth_space
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Posts: 67

PostPosted: Mon Jan 13, 2025 15:33    Post subject: Reply with quote
Flash succesfull ( after a lot of reboots looking to the lan connection)
First result:
Missing 6GHz network ( not in the menu)
Unable to connect to the wireless with or without security. So no luck there.

wireless signal about 2 meters away hops from 100% tot 50% with an interval of 5 seconds.
kernel-panic69
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PostPosted: Mon Jan 13, 2025 15:45    Post subject: Reply with quote
Serial logs and system logs would be nice to have for full feedback purposes.
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seth_space
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PostPosted: Mon Jan 13, 2025 15:53    Post subject: Reply with quote
ssh option is greyed out. So some dummy help needed here..
Code:
Jan 1 01:52:16.350 DD-WRT syslog.info syslogd started: BusyBox v1.37.0
Jan 1 01:52:16.355 DD-WRT user.info : [syslogd] : successfully started
Jan 1 01:52:16.359 DD-WRT kern.notice kernel: klogd started: BusyBox v1.37.0 (2025-01-11 17:52:05 +07)
Jan 1 01:52:16.359 DD-WRT user.info : [klogd] : successfully started
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x51af8014]
Jan 1 01:52:16.359 DD-WRT kern.notice kernel: [ 0.000000] Linux version 6.6.71-rt29 (root@linux.shellfast) (aarch64-openwrt-linux-gcc (OpenWrt GCC 14.2.0 r27059+16-6bb334c5cf) 14.2.0, GNU ld (GNU Binutils) 2.42) #2083 SMP Sat Jan 11 17:50:44 +07 2025
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] Machine model: Linksys MR7500
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] OF: reserved mem: 0x0000000000060000..0x0000000000065fff (24 KiB) nomap non-reusable memory@60000
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] OF: reserved mem: 0x0000000040000000..0x0000000040ffffff (16384 KiB) nomap non-reusable nss_region@40000000
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] OF: reserved mem: 0x000000004a100000..0x000000004a4fffff (4096 KiB) nomap non-reusable bootloader@4a100000
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] OF: reserved mem: 0x000000004a600000..0x000000004a9fffff (4096 KiB) nomap non-reusable memory@4a600000
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] OF: reserved mem: 0x000000004aa00000..0x000000004aafffff (1024 KiB) nomap non-reusable memory@4aa00000
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] OF: reserved mem: 0x000000004ab00000..0x000000004e1fffff (56320 KiB) nomap non-reusable memory@4ab00000
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] OF: reserved mem: 0x000000004e200000..0x000000004e2fffff (1024 KiB) nomap non-reusable q6_etr_region@50000000
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] OF: reserved mem: 0x000000004e300000..0x000000004e3fffff (1024 KiB) nomap non-reusable m3_dump_region@50100000
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] OF: reserved mem: 0x000000004e400000..0x00000000509fffff (38912 KiB) nomap non-reusable qcn9000_pcie0@4e400000
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] Reserved memory: created DMA memory pool at 0x0000000050a00000, size 9 MiB
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] OF: reserved mem: initialized node dma_pool0@50A00000, compatible id shared-dma-pool
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] OF: reserved mem: 0x0000000050a00000..0x00000000512fffff (9216 KiB) nomap non-reusable dma_pool0@50A00000
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] Zone ranges:
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] DMA [mem 0x0000000040000000-0x000000005fffffff]
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] DMA32 empty
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] Normal empty
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] Movable zone start for each node
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] Early memory node ranges
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] node 0: [mem 0x0000000040000000-0x0000000040ffffff]
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] node 0: [mem 0x0000000041000000-0x000000004a0fffff]
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] node 0: [mem 0x000000004a100000-0x000000004a4fffff]
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] node 0: [mem 0x000000004a500000-0x000000004a5fffff]
Jan 1 01:52:16.359 DD-WRT kern.info kernel: [ 0.000000] node 0: [mem 0x000000004a600000-0x00000000512fffff]
Jan 1 01:52:16.360 DD-WRT kern.info kernel: [ 0.000000] node 0: [mem 0x0000000051300000-0x000000005fffffff]
Jan 1 01:52:16.360 DD-WRT kern.info kernel: [ 0.000000] Initmem setup node 0 [mem 0x0000000040000000-0x000000005fffffff]
Jan 1 01:52:16.360 DD-WRT kern.info kernel: [ 0.000000] psci: probing for conduit method from DT.
Jan 1 01:52:16.360 DD-WRT kern.info kernel: [ 0.000000] psci: PSCIv1.0 detected in firmware.
Jan 1 01:52:16.360 DD-WRT kern.info kernel: [ 0.000000] psci: Using standard PSCI v0.2 function IDs
Jan 1 01:52:16.360 DD-WRT kern.info kernel: [ 0.000000] psci: MIGRATE_INFO_TYPE not supported.
Jan 1 01:52:16.360 DD-WRT kern.info kernel: [ 0.000000] psci: SMC Calling Convention v1.0
Jan 1 01:52:16.360 DD-WRT kern.info kernel: [ 0.000000] percpu: Embedded 17 pages/cpu s30696 r8192 d30744 u69632
Jan 1 01:52:16.360 DD-WRT kern.debug kernel: [ 0.000000] pcpu-alloc: s30696 r8192 d30744 u69632 alloc=17*4096
Jan 1 01:52:16.360 DD-WRT kern.debug kernel: [ 0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3
Jan 1 01:52:16.360 DD-WRT kern.info kernel: [ 0.000000] Detected VIPT I-cache on CPU0
Jan 1 01:52:16.360 DD-WRT kern.info kernel: [ 0.000000] CPU features: detected: Spectre-v4
Jan 1 01:52:16.360 DD-WRT kern.info kernel: [ 0.000000] CPU features: kernel page table isolation forced OFF by mitigations=off
Jan 1 01:52:16.360 DD-WRT kern.info kernel: [ 0.000000] alternatives: applying boot alternatives
Jan 1 01:52:16.360 DD-WRT kern.notice kernel: [ 0.000000] Kernel command line: init=/sbin/init rootfstype=squashfs ubi.mtd=alt_rootfs root=mtd:squashfs rootwait mitigations=off root=/dev/ubiblock0_0
Jan 1 01:52:16.360 DD-WRT kern.info kernel: [ 0.000000] Dentry cache hash table entries: 65536 (order: 7, 524288 bytes, linear)
Jan 1 01:52:16.360 DD-WRT kern.info kernel: [ 0.000000] Inode-cache hash table entries: 32768 (order: 6, 262144 bytes, linear)
Jan 1 01:52:16.360 DD-WRT kern.info kernel: [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 129024
Jan 1 01:52:16.360 DD-WRT kern.info kernel: [ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
kernel-panic69
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PostPosted: Mon Jan 13, 2025 16:37    Post subject: Reply with quote
Unless telnet is magically disabled by default, there is that option for syslogs, but primary concern is getting serial console logs. I guess we'll wait until @lexridge and/or @Zyxx gets the device in hand.
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seth_space
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PostPosted: Mon Jan 13, 2025 16:39    Post subject: Reply with quote
Just tell me what to do i i will deliver.
But for now it seems the wanport is unavailable.. trying a reboot.

oaky, telnet working these are the messages

Mod edit: Probably an incomplete log due to post size limitation of forum. Now in attached text file. -kp69


Last edited by seth_space on Mon Jan 13, 2025 18:07; edited 1 time in total
lexridge
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Location: WV, USA

PostPosted: Mon Jan 13, 2025 17:53    Post subject: Reply with quote
seth_space wrote:
ssh option is greyed out. So some dummy help needed here..

- Telnet into the device. That should be available by default (after you set the user/pass).
- type #cat /proc/mtd
- Look for a partition named oops. There will be a mtd number associated with it if there.
- If it's there, type:
- strings /dev/mtdNN

It should spit out text containing a kernel panic if one occurred. Post it here if so.

_________________
- Linksys EA8500: I-Gateway, WAP/VAP 5ghz only. Features: WDS-AP, VLANs, Samba, WG, Entware - r59429
- Linksys EA8500: 802.11s Secondary w/VLAN Trunk over 5ghz - r59171
- Linksys MX4300: 802.11s Primary w/VLAN Trunk over 5ghz. 2.4ghz WAP/VAP only - r59171
- Linksys MX4300 (WAP/VAP (7)) Multiple VLANs over single trunk port. Entware/Samba r59451
- Linksys MR7350: WDS Station for extended Ethernet r59451
- Linksys Velop WHW03v1 x2: OpenWRT w/GRETAP tunnel for VLANs on VAPs
- OSes: Fedora 40, 10 RPis (2,3,4,5), 23 ESP8266s: Straight from Amiga to Linux in '95, never having owned a Windows PC.

- Forum member #248
lexridge
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Posts: 1837
Location: WV, USA

PostPosted: Mon Jan 13, 2025 18:02    Post subject: Reply with quote
ho1Aetoo wrote:
But Linksys claims 2GB ...

Yeah, very odd they claim 2GB. Seems like blatant false advertising to me.

We may need to set up a swap partition on USB for this one apparently.

_________________
- Linksys EA8500: I-Gateway, WAP/VAP 5ghz only. Features: WDS-AP, VLANs, Samba, WG, Entware - r59429
- Linksys EA8500: 802.11s Secondary w/VLAN Trunk over 5ghz - r59171
- Linksys MX4300: 802.11s Primary w/VLAN Trunk over 5ghz. 2.4ghz WAP/VAP only - r59171
- Linksys MX4300 (WAP/VAP (7)) Multiple VLANs over single trunk port. Entware/Samba r59451
- Linksys MR7350: WDS Station for extended Ethernet r59451
- Linksys Velop WHW03v1 x2: OpenWRT w/GRETAP tunnel for VLANs on VAPs
- OSes: Fedora 40, 10 RPis (2,3,4,5), 23 ESP8266s: Straight from Amiga to Linux in '95, never having owned a Windows PC.

- Forum member #248
seth_space
DD-WRT User


Joined: 23 Sep 2009
Posts: 67

PostPosted: Mon Jan 13, 2025 18:11    Post subject: Reply with quote
No oops..
oot@DD-WRT:~# cat /proc/mtd
dev: size erasesize name
mtd0: 00180000 00020000 "sbl1"
mtd1: 00100000 00020000 "mibib"
mtd2: 00380000 00020000 "qsee"
mtd3: 00080000 00020000 "devcfg"
mtd4: 00080000 00020000 "rpm"
mtd5: 00080000 00020000 "cdt"
mtd6: 00080000 00020000 "appsblenv"
mtd7: 00180000 00020000 "appsbl"
mtd8: 00080000 00020000 "art"
mtd9: 00080000 00020000 "ethphyfw"
mtd10: 00080000 00020000 "u_env"
mtd11: 00040000 00020000 "s_env"
mtd12: 00040000 00020000 "devinfo"
mtd13: 05200000 00020000 "kernel"
mtd14: 04a00000 00020000 "rootfs"
mtd15: 05200000 00020000 "alt_kernel"
mtd16: 04900000 00020000 "alt_rootfs"
mtd17: 00100000 00020000 "nvram"
mtd18: 00400000 00020000 "sysdiag"
mtd19: 13d00000 00020000 "ddwrt"
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