mt7628: changing TX power do not work
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- Dominant language
- C
- Stars
- 888
- Forks
- 436
- PR merge metrics
- No merged PRs in 30d
Description
When using mt7628 device with mt76/mt7603 driver in AP mode it seems that changing tx power functionality is broken. Using the iw dev wlanX-X set txpower X command seems to set the tx power as displayed in iwinfo Tx-Power field but when scanning the mt7628 AP multiple times and changing the tx power level the signal value doesn't change even when tx power i set to 0.
Current behaviour:
- mt7628 device with mt76/mt7603 driver running in AP mode
- Set the tx power level using
iw dev wlanX-X set txpower Xcommand - In
iwinfooutputTx-Powerfield displays correct value - Scanning the AP and changing its tx power, doesn't seem to effect signal strength
Issue:
- Although TX power levels can be set and are reported correctly by
iwinfo, they do no appear to have any real effect on the RF output.
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the mt7628 AP case with the mt76/mt7603 driver, using iw dev wlanX-X set txpower X, iwinfo, and repeated scans. Trace the tx-power setting path and verify that changing the reported level changes the actual RF signal; done means the configured levels affect scan-observed signal strength, including at 0.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c
- Domain
- networking
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100