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FS#4013 - Netgear DM200 bootloop with 21.02 (stable) #9148

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openwrt-bot opened this issue Sep 7, 2021 · 2 comments
Closed

FS#4013 - Netgear DM200 bootloop with 21.02 (stable) #9148

openwrt-bot opened this issue Sep 7, 2021 · 2 comments
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madhatter:

Using 19.07.8 on Netgear DM200 without any problems, previous point releases of 19.07 have also worked flawlessly.

Using LuCI, did upgrade to 21.02 (first stable release) whilst retaining settings. Flashing appeared to work and device re-booted but appeared to get stuck at boot with power led blinking.
Recovered device back to 19.07.8 using Netgear instructions with TFTP.

Attempted 21.02 upgrade again without saving settings - same result, apparent boot loop (power LED blinking).
Recovered device to 19.07.8 again - all ok.
Used TFTP to flash 21.02 factory image with same result - flashing appeared to work but upon restart, stuck in boot loop.

Firmware used each time was Lantiq XRX200 21.02.
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tomn:

As mentioned on the forum, this is probably the kernel size issue:

https://openwrt.org/toh/netgear/dm200#fix_u-boot_configuration_to_support_larger_kernels

I've tried to solve this in openwrt before by introducing a build with a smaller kernel, but this was rejected (for good reasons):

#1770

The suggested approach of adding an extra bootloader stage would be good, but it's quite a bit of work to put in for a device which is no longer being produced, especially when it's so quite easy to work around.

I think the best fix for this is better documentation; perhaps this should be mentioned in the release notes?

@openwrt-bot
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madhatter:

I can confirm the latest instructions on the DM200 device page are correct.
I have now been able to upgrade to 21.02 and the device has been running fine for three days.
I appreciate that a bootloader related change would be a lot of work for what is a rather niche device these days.

Thank you for your help.

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