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Mobile data broken on MM master with Quectel EG25-G

Description

Running MM master for testing !459 (closed) brought up a problem with netlink on the Quectel EG25-G modem of the PinePhone. When activating mobile data, the net link cannot be created, thus the phone cannot use mobile data.

connection attempt #1 failed: failed to create net link for device: failed to add link for device: Could not allocate link: Failed to add link with mux id 1: Netlink message with transaction 1 failed

EDIT: After enabling CONFIG_RMNET in the kernel, the download speed drops from 20 Mbps to 350 Kbps making mobile data unusable.

What's expected?

Connection attempts succeed and a WWAN link is created with full speed.

What's happening?

Connection attempts fail because a link cannot be added or speed drops with CONFIG_RMNET enabled.

How to reproduce?

  1. Boot the phone
  2. Go to Settings
  3. Turn on mobile data
  4. Phone doesn't get a connection to WWAN or downloads very slow

Environment

  • MM master f916d075a78ddacd25e2db9c4eebb99b490482ff and !459 (closed) enabled
  • PinePhone with Quectel EG25-G modem
  • pmOS edge
Edited by Dylan Van Assche
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