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Firmware => Synology DSM 7.3 => Topic gestart door: Birdy op 09 oktober 2025, 12:23:00
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[Affected Version]
DSM 7.3-81180
DS20 series and earlier models
[Symptom]
After upgrading to DSM 7.3-81180, the LED Brightness Control function may stop working on affected models.
Our development team has identified the cause and will include a fix in a future DSM update.
[Workaround]
You can restore LED brightness control by creating a scheduled task in DSM:
Go to Control Panel → Task Scheduler → Create → Scheduled Task → User-defined script.
Enter a task name (for example: Fix LED Brightness).
In the User field, select root.
In the Schedule tab, select Run on the following date
In the Task Settings tab, paste the following command into the “Run command” box:
sed -i -E '/<i2c\b[^>]*command_type=/! s|(<i2c\b[^>]*)/>|\1command_type="SMBUS" />|' /usr/syno/etc.defaults/led_brightness.xml; cp /usr/syno/etc.defaults/led_brightness.xml /tmp/syno_led_brightness/led_brightness.xml;
6. Click OK to save.
7. Select the new task and click Run to execute it immediately.
Synology BRON (https://community.synology.com/enu/forum/1/post/194794)
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