Questions tagged [dmesg]

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rsyslog not logging kern messages

I'm using Ubuntu 20.04 with rsyslog and up-to-date packages. I want to log messages from iptables. I can see those messages with dmesg - it shows the data I expect. deploy$ dmesg -x kern :warn : [...
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0answers
30 views

dmesg + how to know if we need to update the network driver

We have 326 linux servers in our Hadoop cluster. All servers are rhel 7.2, and linux kernel version is 514.26.2.e17.x86_64. We notice the following message from dmesg (kernel massages): 140e the ...
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0answers
37 views

dmesg is flooding with lines as SELinux: initialized

on our rhel 7.x machines we have run dmesg but we get all log as [12283.628766] SELinux: initialized (dev tmpfs, type tmpfs), uses transition SIDs [12286.352175] SELinux: initialized (dev tmpfs, type ...
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18 views

FT232 USB serial connection error

I have a serial uart device - FT232. I cant get it to communicate with my python program. When connecting the device I'm getting an error message on dmesg: Unable to read latency timer: -32 And cant ...
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26 views

How to enable Ethernet interface?

I have a problem with my Ethernet interface. I think this problem occur after I replaced my bios because of password. The problem is, when I turn on my laptop after shutdown my Ethernet interface dose ...
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1answer
56 views

Xubuntu slow startup/boot time

I have a Xubuntu desktop machine with an i3-7100, a NVME-system-drive and 6-hdd ZFS filesystem for multimedia storage (mainly running Desktop-Kodi) which takes longer than i expected to boot. When the ...
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0answers
48 views

docker + dmesg complain about Unmounting Filesystem and Mounting V4 Filesystem

we have rhel 7.2 server with docker service and docker container docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS ...
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33 views

Ways to cause RAM errors and display them to dmesg or messages logfile in CentOS 7

I would like to know how to generate an ECC correctable error or an FB-DIMM configuration write error (Non-Fatal Recoverable) that will be displayed to the dmesg or messages logfiles, like in the ...
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78 views

Strange errors in my DMESG that cause the computer to freeze

I don't know what to do about this. My OS suddenly freezes (although music keeps playing) and in my DMESG I am constantly getting these errors: [sex dez 4 12:08:32 2020] alx 0000:05:00.0: AER: PCIe ...
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74 views

How do I stop dmesg messages about previously used NFS client mount?

In Linux 5.8.0, NFSv4 client was in use for some time, then server gone away from network, then I umount -f -l-ed it away. Typically I expect NFS-related messages to go away from kernel log, but now I ...
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2answers
112 views

How to change dmesg output colors in terminal? [closed]

There are some nasty colors in dmesg output. How to change this? Looked into .Xresources and .bashrc, no colors defined there matched what I was searching for.
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1answer
31 views

Diagnosing Hard Disk Issue

I've been experiencing random issues in accessing a particular disk - sometimes Finder will hang and not respond when accessing the disk or some directory in it. Sometimes the system just won't ...
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69 views

USB keeps resetting randomly

I'm having weird problem with USB on my Linux Mint. It constantly resets some of my USB devices. What's weird is the fact that even the device that kernel chooses to reset is random.. sometimes it's ...
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1answer
34 views

USB device not being recognised as mass storage

I recently bought an external SSD. My Windows laptop recognises the device just fine, but I can't mount it on my Linux machine. The output of lsusb | grep SanDisk shows it there: Bus 002 Device 004: ...
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1answer
73 views

rhel + eth0: Detected Tx Unit Hang

Dear friends and college we have VM machines with rhel 7.2 version - 3.10.0-327.el7.x86_64 we noticed about the following messages ( from /var/log/messages ) e1000 0000:02:01.0 eth0: Detected Tx Unit ...
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USB printer not identified Ubuntu 18.04

I have some issues with this printer (HP Laser 107a). It might not be a Unix issue but coming from the printer hardware. I suspect the USB cable but I'm not an expert at all in this kind of issue. ...
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3answers
50 views

rhel 7.x machines unexpected failure and message file

we have today strange behavior with our Linux server rhel 7.6 from some reason server goes down and from the messages file we can see that server stop be available on Oct 16 18:17:22 after some ...
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87 views

Identify ram module linked to ECC error di DMESG

one of my server is logging the following ECC errors: [lun set 14 00:14:16 2020] {33}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 1 [lun set 14 00:14:16 2020] {33}...
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1answer
169 views

Find the kernel module printing the error message

Is there a way to find which of the kernel modules printed the message to the kernel log? We see a few new entries in dmesg output and I am trying to figure out from which module it came from. The ...
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1answer
96 views

Can't connect to wifi: sta recv deauth reason code(15)

I have a Wireless USB Adapter ZyXel NDW6605 which I'm trying to use on my Debian 10. It uses Realtek RTL8812AU chipset so I installed the driver from here https://github.com/lwfinger/rtl8812au and ...
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1answer
159 views

how are early logs logged in rsysylog, when rsysylog is not yet running?

I am using rsyslog on Debian Buster. I am using old-style sysvinit, not systemd. rsyslog is started late in the init startup sequence, after most init scripts have run. The dmesg messages during boot ...
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0answers
61 views

Difficulty getting gammu for SMS gateway to recognize iphone connected with USB

I'm attempting to set up an SMS gateway as shown in this link: http://xaintech.blogspot.com/2010/05/build-your-own-sms-gateway-with-ubuntu.html I am trying to configure gammu to connect to my iPhone ...
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0answers
141 views

OS doesn’t see newly installed SSD (SATA)

I had broken HDD in my laptop for quite a while. Recently I’ve installed Fedora 32 on my second drive, I didn’t checkmark that broken drive during installation and everything was fine. Today I’ve ...
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1answer
162 views

sha1sum reports that checksums do not match even though they are identical

Perhaps I'm doing something very stupid here, but Google hasn't been very helpful in resolving the problem. I have an archive of files I made for backup purposes. I've generated an SHA1 checksum file ...
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1answer
1k views

dmesg + Assuming drive cache: write through

when we run the following dmesg on rhel 7.2 , we get errors about assuming drive cache dmesg --level=err [ 5.325381] sd 0:0:0:0: [sda] Assuming drive cache: write through [ 5.325492] sd 0:0:5:0:...
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6 views

Tracing the changes in system between two time

My printer scanner is works sometime while it didn't work other time. Is there is a way to find out what makes it work, like saving the whole system configuration at each instance and then checking ...
2
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1answer
77 views

How to parse line by line from dmesg in bash?

How to parse line by line from dmesg command?, i try using a while and read: while read -r L; do echo "line: ${L}"; done < <(dmesg -c --level=err) But can not echo the lines. I try using: ...
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27 views

No disk activity in dmesg

This is a follow-up to this question and answer. I have the same problem as in that question (external HDD, attached to a Raspberry PI, which I use as a NAS, spinning up randomly), and tried what ...
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1answer
286 views

rhel unexpected reboot + messages file

we have rhel 7.5 machines , that perform unexpected reboot before the reboot we can see the following lines from /var/log/messages file any idea how this lines indicate about the machine reboot? ...
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0answers
82 views

Bluetooth not getting recognized on newer kernels (works on 4.19)

I have windows 10 installed on my pc. I installed many linux distros including Ubuntu, Elementary OS, Pop os and debian in dual boot. Out of all of these, bluetooth worked only on debian. I checked ...
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1answer
146 views

dmesg + rhel + what need to update according to dmesg

we have linux rhel server uname -r 3.10.0-862.el7.x86_64 more /etc/redhat-release Red Hat Enterprise Linux Server release 7.5 (Maipo) from the dmesg we see the following dmesg | grep "The driver ...
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25 views

hci0 not detected in dmesg in distros other than Debian

I tried ubuntu,pop os, elementary, bluetooth worked on none of them. In the bluetooth settings, it said no adapters found or no device found. When I installed debian, placed the rtl_bt folder in /lib/...
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2answers
123 views

MDNS multi-cast DNS and resolv.conf file

Can a MDNS ( multicast dns ) issue cause duplicate lines in the resolv.conf file? For example , we have the following resolv.conf file more /etc/resolv.conf search coronplesdf.hh.com server 108.16.1....
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3answers
903 views

dmesg + UDP: bad checksum. + rhel 7.x

from the dmesg we get very strange lines as [6484420.812643] raid6: using avx2x2 recovery algorithm [6484420.859086] Btrfs loaded [6484426.278636] nr_pdflush_threads exported in /proc is scheduled ...
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0answers
36 views

sysfs usb attributes

When I plug in my logitech keyboard dmesg shows me: [11618.908908] usb 3-6: USB disconnect, device number 8 [11622.945301] usb 3-6: new low-speed USB device number 9 using xhci_hcd [11623.135364] ...
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95 views

kernel messages about failed to assign mem

we have 5 Linux rhel machines , we noticed that all machines was hang with the same time from messages file we can se the following Dec 29 19:54:25 localhost kernel: pci 0000:ff:12.4: BAR 4: failed ...
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0answers
58 views

USB drive not recognized

I am trying to access important files on a HAMA Classic USB 3.0 Flash Drive, to no avail. It worked fine yesterday but now it doesn't seem to be properly recognized. The drive is there in lsusb (...
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224 views

SSD keeps disappearing

I have an SSD connected to my Raspberry Pi 3B+ using the Element14 Pi Desktop kit. The drive is recognized as /dev/sda and correctly mounted from /etc/fstab at boot, but then will disappear after ...
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0answers
1k views

Linux doesn't (re)detect devices connected to USB hub over USB type C

Problem description I just bought a new widescreen monitor (Dell Ultrasharp U4919DW) and I use it in split screen mode where one one side my work laptop is connected with DP and on the other side my ...
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1answer
692 views

Arch Linux guest (Virtualbox): vboxdrv.service fails at startup

I am running Windows 10 as a Virtualbox Host and Arch Linux as Guest. During startup, vboxdrv.service fails. The tty starts fine, I can do everything inside it. However, startx leads to what I ...
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1answer
2k views

Remove ECC warnings in system log

How can I disable these warnings about ECC? I don't have ECC memory and so disabled it in bios also but it still prints it. [ 4.697057] EDAC amd64: Node 0: DRAM ECC disabled. [ 4.697061] EDAC ...
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667 views

rhel + Metadata corruption detected at xfs

due of linux electricity failure , our server crashed and reboot now server is up but we see the following messages from dmesg is it mean that OS damaged ? [33505.670070] XFS (dm-2): Unmount and ...
2
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1answer
773 views

MTRR (Memory Type Range Register) in Debian 10 dmesg messages

[Sun Mar 1 07:51:40 2020] MTRR default type: uncachable [Sun Mar 1 07:51:40 2020] MTRR fixed ranges enabled: [Sun Mar 1 07:51:40 2020] MTRR variable ranges enabled: [Sun Mar 1 07:51:40 2020] ...
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0answers
1k views

How can I fix Debian “Problem loading UEFI:db X.509 certificate (-65)” error message!

Debian 10 on an Acer Aspire A515-51G, UEFI boot I have this error displayed at boot logs and in "dmesg". Other threads I have found, suggested to disable "Secure Boot" in BIOS but that didn't fix ...
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3answers
209 views

How do I troubleshoot some unexpected error messages reported while booting Debian 10?

I upgraded my Debian from 9th version to 10th when Debian 10 was officially released. Since I upgraded to Debian 10, I am getting following messages while booting: [ 11.008027] pstore: Using ...
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3answers
367 views

dmesg follow in FreeBSD

Is there a way to watch dmesg in realtime on FreeBSD like using the --follow (-w) option on dmesg in Linux?
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1answer
3k views

Unable to enumerate USB device - unknown device: how to find out device that odes not show in lsusb?

I have a hardware product which sends a signal to an LCD display. The hardware box (unknown chip set) has an USB-A outlet and connects to a USB-B outlet on an LCD-display. The LCD display shows ...
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0answers
742 views

dmesg shows APCI BIOS error AE_ALREADY_EXISTS

I am seeing this in dmesg startup, over and over, after like 20 times, it moves on. What does the error mean and should I be worried? I have Ubuntu 18.04.3 Everything appears to be working, but I ...
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0answers
477 views

*** VALIDATE xxx *** in dmesg meaning?

I can see these 4 VALIDATE lines in my dmesg protocol: $ \dmesg | grep VALIDATE [ 0.176538] *** VALIDATE proc *** [ 0.176572] *** VALIDATE cgroup1 *** [ 0.176574] *** VALIDATE cgroup2 *** [ ...
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1answer
332 views

BIOS-e820 in dmesg - How do I calculate the memory range from addresses

kp@localhost ~]$ sudo dmesg | grep -i "e820" results in the following output: [ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009ffff] usable [ 0.000000] BIOS-e820: [mem ...

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