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2
votes
1answer
50 views

Slow root / mounting time

By running dmesg -t -d on my Raspbian/Debian Jessie, I see that this is a bottleneck in my booting process: [< 4.777880>] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. ...
1
vote
1answer
50 views

How to setup boot scripts to save orphan inodes after improper shutdown?

after abnormal shutdown in dmesg I have [ 16.107445] EXT4-fs (dm-1): INFO: recovery required on readonly filesystem [ 16.107450] EXT4-fs (dm-1): write access will be enabled during recovery [ ...
1
vote
1answer
567 views

Mount an USB: dmesg shows nothing

I'm trying to mount a USB-drive. However, it seems that my Linux (Debian) doesn't recognise it at all (and any other usb-drive), though it powers it. The usb-hubs are OK, because I was able to boot ...
1
vote
1answer
669 views

No ttyUSB when connecting USB-RS485 to Beaglebone Black

I'm trying to connect a externally powered board to control the motors of a robot to my BeagleBone Black. I'm using ssh over USB(the mini-usb) to control the Beaglebone from my laptop. The BBB is ...
1
vote
1answer
211 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 ...
0
votes
1answer
108 views

btrfs: mismatching generation and generation_v2 found in root item

I am seeing this message in dmesg: btrfs: mismatching generation and generation_v2 found in root item I found a related question here: Understanding btrfs dmesg However, unlike that question, I ...
4
votes
0answers
456 views

dmesg: pci BAR 7: can't assign io

I have VMware virtual machine running Debian Wheezy. I have compiled my own kernel 3.14. I have noticed dmesg is flooded with messages pci BAR 7: can't assign io (size 0x1000). I have no idea what ...
2
votes
0answers
181 views

Virtual kernel memory layout in dmesg linux kernel 2.6.31

I'm working on a embedded linux project for ARM architecture, kernel version is 2.6.31.12-rt21. In dmesg, I cannot see the virtual kernel memory layout like this: virtual kernel memory layout: ...
1
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0answers
18 views

Can I capture reboot errors on a system that lives in memory?

I have a machine that will intermittently experience boot issues and the system will hang and won't come up. I would normally go to check dmesg, but the problem is the system lives in memory and gets ...
1
vote
0answers
45 views

How can I find out if a problem with the USB ports in my laptop is due to hardware or software?

A few days ago, the USB ports in my laptop stop working. At first, I thought it might be due to a recent update of my OS (Ubuntu 14.04), so I began testing if something came up when connecting a ...
1
vote
0answers
258 views

Cannot mount USB 3.0 Flash drive

I have a 16GB USB 3.0 thumb drive that has worked wonderfully up until two days ago... When ever I plug it into a USB3.0 slot: The light flickers indefinitely; Nautilus shows the Open/Eject popup ...
0
votes
0answers
21 views

Console weather station WH1080 not reconized

I've attached my WH1080 console weather station to my OpenWRT linux but it doesn't show up. I was expecting this line on dmseg: Bus 001 Device 002: ID 1941:8021 Dream Link WH1080 Weather Station / ...