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The ESS Solo1 sound card kernel module enables the microphone input on boot. The IBM Thinkpad i1482 has integrated speakers and microphone such that loud feedback noise erupts upon booting Red Hat pinstripe. After booting the first time, I can login, run aumix to turn off the microphone volume. Subsequent boot then have a short loud squirt of feedback noise on bootup during the short time between the solo1 module being loaded and the initscripts restoring my mixer settings, so even fixing it manually that way isn't perfect.
maybe we can get this fixed.
Created attachment 2456 [details] Try this see if it does the job
Thanks, I will try that patch out next time I get a free weekend to compile the kernel with.
This problem is somewhat worse that described. Even if you turn off the microphone at boot, it will turn itself back on again at a later time. My guess is that the sound module gets unloaded and reloaded, and defaults to the microphone being on.
Closing - the fix proved to work and became mainstream. Anyone seeing hooting esssolo should check their mixer settings as aumix remembers them from shutdown to next boot