Grafana 10.0 Dashboards fail to load panels intermittently

Grafana
1

Hi everyone, :waving_hand:

I upgraded to Grafana 10.0 last week, and now some dashboards partially load: you’ll see the panel frames but no data—just a loading spinner that never completes. Refreshing helps sometimes, but this week it’s happening more frequently.

Here’s what I’ve checked so far:

  • Verified all data sources (Prometheus, MySQL) test successfully
  • Increased panel_max_data_points in grafana.ini
  • Cleared browser cache and tested in Chrome & Firefox
  • Restarted Grafana service and cleaned its cache folder

Still, dashboard panels either stay in loading state or show “Error fetching data.”

I also check this: Syslog Network Devices excel classes in vadodara Has anyone encountered this in 10.0? Could this be related to new rendering changes or throttling? Any ideas on logging or config tweaks to pinpoint the issue would be much appreciated!

Thanks!

4

Since you’ve validated data sources and cleared cache, try disabling ‘panel rendering cache’ by setting disable_sanitize_html = true in grafana.ini.

Also, check for any rate limits or query timeouts under dataproxy settings.