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FS#3072 - Samknows WhiteBox8 misses 2.4 GHz pcie wireless NIC #7838

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openwrt-bot opened this issue May 8, 2020 · 5 comments
Open

FS#3072 - Samknows WhiteBox8 misses 2.4 GHz pcie wireless NIC #7838

openwrt-bot opened this issue May 8, 2020 · 5 comments
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@openwrt-bot
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txt.file:

==== device ====
[[https://openwrt.org/toh/samknows/sk-wb8|SamKnows SK-WB8]]

==== software versions ====
=== tested & misses 2.4 GHz NIC ===

  • latest tested bad OpenWrt master as of [[https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=03fd38d6128873de0d3b1be9615917c0679efc0f|03fd38d6128873de0d3b1be9615917c0679efc0f]]
  • earliest tested bad OpenWrt master as of [[https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=5c1d88a83f6d9856324f537c2a27fc3325fd9abd|5c1d88a83f6d9856324f537c2a27fc3325fd9abd]]
    === tested & has 2.4 GHz NIC ===
  • latest tested good OpenWrt master as of [[https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=b51ea43f900191bc8ce7411dad39239fac6df4f8|b51ea43f900191bc8ce7411dad39239fac6df4f8]]

==== reproduce ====

  • build OpenWrt master branch with a given commits and flash it on the device (my build config is attached)
  • run "iw dev" or "iw list"
    • in problem state it lists one interface (the 5 GHz wireless NIC)
    • in good state it lists two interfaces (2.4 GHz and 5 GHz wireless NIC)

==== conclusion ====
I think it has either to do with [[https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=1dce5c8a2835a05fbf532115a2baf0d1a8ca76c9|ramips: mt7621: switch kernel version to 5.4]] or with [[https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=9ebb85c372e525b08debe286d976a6376ca0dbbe|ramips: mt7621: update PCIe node in dtsi]]. Between the known good and earliest known bad commit are multiple commits working together. I fear to test them one by one.

@openwrt-bot
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txt.file:

I tested further [[https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=e714cf4195b5798f40a3442c01233ce4783ef0ad|e714cf4195b5798f40a3442c01233ce4783ef0ad]] is also working. So my initial conclusion is wrong.

@openwrt-bot
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txt.file:

tested as bad [[https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=82df192a010418fac9c4db440490290f55f7e157|82df192a010418fac9c4db440490290f55f7e157]]

If my manual bisect is correct I am down to 10 possible commits between working and broken.

@openwrt-bot
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txt.file:

Can't reproduce it in a constant way. Sometimes PCIe1 is present. Sometimes it is not present. Maybe this is just a hardware issue on my device. I don't know. Kind of strange.

@openwrt-bot
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txt.file:

compiled r13225-bc0288b768, flashed it via TFTP and issue is present

flashing via "sysupgrade -n image.bin" has the same output

@openwrt-bot
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txt.file:

compiled r13235-eb17ee294c (update to linux 5.4.41), flashed via TFTP and issue is present

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