Speed up suspend/resume for FreeBSD
Since I took my laptop (Thinkpad X220) from the shelf, hacked it, and installed FreeBSD 14.2 and Coreboot on it — I found that suspend/resume times are longer than before. When I was using this laptop with FreeBSD 11 and proprietary BIOS — it was suspending slightly faster. And resuming almost immediately — I was able to open the lid and the computer become usable immediately.
Things changed when I started to use this laptop with FreeBSD 14.2 and Coreboot — the resume process takes near a minute or more. I thought that the Coreboot is to blame for this.
After some time I've installed Libreboot, based on the Coreboot, and the problem with long resume time still persisted. So, I starting to think that these opensource software somehow are to blame for long resume time.
One day, the @libreleah (lead Libreboot developer) helped me with my problem (https://mas.to/@libreleah/114930689192089022). It turned out that Libreboot stores the debug log and timestamps in memory and with cbmem utility I can access it.
