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7
votes
2answers
48k views

command to determine ports of a device (like /dev/ttyUSB0)

I have a question regarding the ports in Linux. If I connect my device via USB and want to check its port I cant do it using the command lsusb, which only specifies bus number and device number on ...
2
votes
1answer
470 views

can't filter printk messages

I'm writing a driver and usually I implement my own log-level scheme. However, this time I figured that I would try to utilize the printk scheme that is built into Linux. I see that I can adjust the ...
2
votes
3answers
2k views

dmesg filled with audits every minute from cron

My dmesg is filled with output of like the following, starting from a couple of seconds after booth and continuing indefinitely: [ 3155.216230] type=1006 audit(1393236841.859:85): pid=4206 uid=0 old ...
1
vote
1answer
3k views

What's the difference between 'no caching page mode present' and 'assuming drive cache. write through.'

Post-POST, post-BIOS screen, post-GRUB; when I boot Debian with a SD card or USB stick plugged in, one of the first things to pop up on the screen (so quickly that usually I don't even notice) looks a ...
3
votes
2answers
38 views

How can I activate extra-verbose mode (debugging mode) during Debian boot?

How do I activate extra verbosity during boot, on Debian? I removed the quiet parameter and tried to add debug but it didn't help. My problem is that my keyboard takes 2-3 min to activate so it ...
3
votes
1answer
683 views

How can I stop “Timed out waiting for forcewake old ack to clear”?

Running Arch Linux with Intel i915 and onboard Intel graphics. If I do a dmesg, I get line after line of "[drm:__gen6_gt_force_wake_mt_get] ERROR Timed out waiting for forcewake old ack to clear". ...
1
vote
0answers
580 views

What does nouveau's “func 08 lookup failed, -2” mean?

Arch Linux Question I have an Nvidia 9500 GT Chipset: G96 (NV96) Family : NV50 This means I can use proprietary pack nvidia-340xx + nvidia-340xx-libgl, but I opted for the open source option: ...