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Cisco Bug: CSCvv98430 - vEdge Boot issue: vedge kernel: i2c i2c-0: SCL is stuck low, exit recovery

Last Modified

Oct 13, 2020

Products (1)

  • Cisco SD-WAN

Known Affected Releases

17.2.1

Description (partial)

Symptom:
When the router is booting it is flooded by:

kern.err: Sep 30 15:54:52 vedge kernel: i2c i2c-0: SCL is stuck low, exit recovery

"show hardware real-time-information" show the same:

Critial Kernel Logs:
kern.err: Jun 24 14:18:32 vedge kernel: sd 0:0:0:0: [sda] No Caching mode page found
kern.err: Jun 24 14:18:32 vedge kernel: sd 0:0:0:0: [sda] Assuming drive cache: write through
kern.err: Jun 24 14:18:32 vedge kernel: sd 0:0:0:0: [sda] No Caching mode page found
kern.err: Jun 24 14:18:32 vedge kernel: sd 0:0:0:0: [sda] Assuming drive cache: write through
kern.err: Jun 24 14:18:32 vedge kernel: sd 0:0:0:0: [sda] No Caching mode page found
kern.err: Jun 24 14:18:32 vedge kernel: sd 0:0:0:0: [sda] Assuming drive cache: write through
kern.err: Sep 30 15:54:37 vedge kernel: sd 0:0:0:0: [sda] No Caching mode page found
kern.err: Sep 30 15:54:37 vedge kernel: sd 0:0:0:0: [sda] Assuming drive cache: write through
kern.err: Sep 30 15:54:37 vedge kernel: sd 0:0:0:0: [sda] No Caching mode page found
kern.err: Sep 30 15:54:37 vedge kernel: sd 0:0:0:0: [sda] Assuming drive cache: write through
kern.err: Sep 30 15:54:37 vedge kernel: sd 0:0:0:0: [sda] No Caching mode page found
kern.err: Sep 30 15:54:37 vedge kernel: sd 0:0:0:0: [sda] Assuming drive cache: write through
kern.err: Sep 30 15:54:52 vedge kernel: i2c i2c-0: SCL is stuck low, exit recovery
kern.err: Sep 30 15:54:52 vedge kernel: i2c i2c-0: SCL is stuck low, exit recovery
kern.err: Sep 30 15:54:52 vedge kernel: i2c i2c-0: SCL is stuck low, exit recovery
kern.err: Sep 30 15:54:52 vedge kernel: i2c i2c-0: SCL is stuck low, exit recovery
kern.err: Sep 30 15:54:52 vedge kernel: i2c i2c-0: SCL is stuck low, exit recovery
kern.err: Sep 30 15:54:52 vedge kernel: i2c i2c-0: SCL is stuck low, exit recovery


Other thing noticed: ge0/0 is Up/Down, confirmed there's an issue with this interface.

Conditions:
-It was seen on 17.2.1 that came with the RMAed routers

-Boot the router from scratch
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