Questions tagged [dmesg]
The dmesg tag has no usage guidance.
170
questions
0
votes
0answers
33 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 ...
0
votes
0answers
20 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] ...
0
votes
0answers
89 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 ...
2
votes
2answers
105 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 ...
2
votes
2answers
51 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?
1
vote
1answer
60 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 ...
0
votes
0answers
128 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 ...
0
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0answers
449 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 ***
[ ...
0
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0answers
31 views
USB ports not working on Gentoo 4.19.27
I'm running a freshly compiled Gentoo 4.19.27-r1.
lspci | grep USB returns:
00:14.0 USB controller: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller (rev 21)
lsusb returns nothing
dmesg | ...
0
votes
1answer
70 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 ...
0
votes
0answers
37 views
Faulty usb device: how to disable to get rid of dmesg errors
I bought a second hand computer, which seems to have a faulty USB port (or something - I haven't encountered it). The only real annoyance is that my syslogs are spammed with the same messages:
[...
2
votes
2answers
507 views
“Calgary: Unable to locate Rio Grande table in EBDA” <- what does this mean?
When I boot my system, I get the following message:
[Sat Oct 26 20:34:25 2019] Calgary: detecting Calgary via BIOS EBDA area
[Sat Oct 26 20:34:25 2019] Calgary: Unable to locate Rio Grande table in ...
1
vote
0answers
549 views
New CentOS 8 Install Crashing
So I just installed CentOS 8 and I keep having random freezes/crashes. I have tried looking at my /var/log/messages but I can't find anything of use to it. The crashes happen inconsistently and I can'...
1
vote
1answer
44 views
How can i find out which hdd is failing
One of my hard driver started to do a noise when i open nemo.
dmesg logs shows
[ 66.160051] ata6.00: exception Emask 0x50 SAct 0x2000 SErr 0x30802 action 0xe frozen
[ 66.160053] ata6.00: ...
0
votes
0answers
21 views
How to input some message into kmsg by printk on web page
How to input some message into kmsg by printk on web page
Apache has no permission to modify /dev/kmsg
0
votes
1answer
46 views
SATA hard disk not recognized
there seems to be a problem with the hard disk. I just wanted to know if I can fix it somehow or I should throw it away. the problem is that the hard disk is not recognized.
https://pastebin.com/...
-2
votes
1answer
278 views
segfault from dmesg + redhat linux
I see unusual info from the dmesg as the following:
addr2line[207071]: segfault at 30 ip 1000543d41881 sp 00037fff87dd4420 error 6
addr2line[207089]: segfault at 0 ip 0200353455f8c9052e sp ...
-1
votes
1answer
35 views
what does ipheth_carrier_set: usb_control_msg: -110 mean
When I connect my girlfriends iphone to my ubuntu mate laptop I am not able to access it.
dmesg -w shows the following log:
[ 1450.188245] usb 1-2: new high-speed USB device number 6 using xhci_hcd
...
3
votes
1answer
884 views
Do I need to take action regarding my Microarchitectural Data Sampling (MDS) status?
My dmesg output contains the following line:
[ 0.265021] MDS CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/mds.html for more ...
0
votes
1answer
26 views
sysctl -a doesn't include log_buf_len
I hope to check the value of log_buf_len via sysctl, but sysctl -a doesn't show it, why and is there any other way to check its value
1
vote
0answers
274 views
How to check for network issues? dmesg? and how to setup logging?
I'm pretty new to Linux but have worked with Windows servers and networks for 30 years so I understand the principles but am learning the 'Linux' way of doing things.
I have setup a Centos 7.6 server ...
5
votes
2answers
174 views
dmesg: custom time format
dmesg has the option -T to print human-readable timestamps, and new versions have the option --time-format, where the time format can be changed, for instance:
--time-format iso
Unfortunately, the ...
0
votes
1answer
70 views
dmesg to check a portable disk
Run dmesg -T to check a portable disk and the results
[Fri Aug 30 21:31:24 2019] usb 2-1: New USB device found, idVendor=1058, idProduct=07a8, bcdDevice=10.42
[Fri Aug 30 21:31:24 2019] usb 2-1: New ...
0
votes
0answers
15 views
Particular USB Device not getting mounted - Embedded Linux
I have an embedded Linux, all the USB devices are getting mounted automatically except one.
The usb device mounts on another Linux machine, so no problem with device.
dmesg output, nothing seems to ...
0
votes
0answers
31 views
get errors after installing the netdata tool
after installing the netdata tool ( https://docs.netdata.cloud/packaging/installer/)
we notice about the following errors that related to netdata tool
[79103.083011] netdata[8026]: segfault at 2f ip ...
0
votes
1answer
240 views
Kensington SD I/O Read Error, not recognised on Ubuntu 19.04?
I have two Kensington SD cards that will not be recognised on my ubuntu 19.04 OS. They are definitely working though, when I plug them into my windows 10 computer they register.
I also have an old ...
1
vote
1answer
42 views
How can I send dmesg printout to ftrace subsystem?
How can I send dmesg printout to ftrace subsystem?
I like correlate the dmesg msg with the functions call graph in ftrace.
Thanks
1
vote
1answer
63 views
How to clear cache in Linux without flooding dmesg?
I have a shell script which repeatedly clears the cache with
echo 3 > /proc/sys/vm/drop_caches
The trouble is that this ends up completely flooding dmesg because it runs so often.
Is there a ...
1
vote
1answer
109 views
Debian dmesg thinkpad_acpi: EC reports that Thermal Table has changed
I'm using Debian 9(stretch) with kernel Linux 4.9.0-8-amd64 on a Thinkpad T440p. I keep receiving logs by the second from dmesg about one particular issue I seem to not find a solution to on the Web. ...
2
votes
1answer
249 views
How to understand Trace from dmesg?
I'm learning linux kernel debugging and dmesg is the tool that output kernel debug log:
...
[ 2.988000] Trace:
[ 2.988000] [<ffffffff80942810>] __warn+0x160/0x190
[ 2.988000] [<...
2
votes
1answer
112 views
How do I get dmesg to store a log file?
My phone keeps rebooting. I want to know what dmesg says at the moment it reboots, so I can diagnose.
Unfortunately, the reboots don't happen predictably, and only when I'm using it. I can't keep my ...
2
votes
1answer
311 views
sd 5:0:0:0: [sda] Attached SCSI disk, what are these four numbers? Will they change?
I can usually see this log in dmesg:
sd 5:0:0:0: [sda] Attached SCSI disk
Can you please explain what are these 4 numbers?
Will these numbers change after reboot? or it should be constant?
2
votes
2answers
80 views
Automatic rmmod / modprobe based on dmesg parsing
I am using a MacBooPro10,1 Debian stable (default install with rsyslogd) system for which the trackpad eventually fails (pointer stop working) from time to time as can be seen :
$ dmesg
[...]
[...
0
votes
1answer
1k views
unable to launch any program: trap int3 ip error
I cannot launch any program in my desktop environment. I get these errors in dmesg:
traps: terminator[3670] trap int3 ip:374dda71261 sp:388624bbec0 error:0
traps: pcmanfm[3685] trap int3 ip:...
0
votes
2answers
48 views
If e2fsck says output from a mounted file system isnt to be trusted, then how does systemd generate log messages from fs errors?
man e2fsck says;
Note that in general it is not safe to run e2fsck on mounted filesystems. The only exception is if the -n option is specified, and -c, -l,
or -L options are not ...
0
votes
0answers
45 views
Linux Kernel: Redirecting dmesg to a txt file through the kernel space
I understand that writing files through the kernel space is not recommended but I have been porting 4.9 to my Android device. While fixing the display, the device stopped booting(Splash -> Black ...
-1
votes
1answer
74 views
Why is clearing the console the default behavior of Linux today? [closed]
Why doesn't the boot messages persist in the terminal after booting, on modern Linux distributions?
Yes, I know I can make the boot messages persist with --noclear or TTYVTDisallocate=no.
Like ...
4
votes
1answer
3k views
“kernel: Buffer I/O error on device” - Does my server have a hardware problem?
we have linux DB server redhat 7.2
we notice about many message as below about all disks that are mounted
from /var/log/messages
what we are need to understand if this behavior is relevant to HW ...
2
votes
2answers
400 views
SSD's hard resetting link CentOS 7
I have two Intel SSDSC2CW120A3 SSDs in a SuperMicro X9SCL/X9SCM set for software RAID-1 on CentOS 7:
Linux hostname.local 3.10.0-957.5.1.el7.x86_64 #1 SMP Fri Feb 1 14:54:57 UTC 2019 x86_64 x86_64 ...
2
votes
2answers
718 views
why MTU change from 1500 to 9000
in /var/log/message file we found something interesting
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: changing MTU from 1500 to 9000
we can see the interface card - en3j87
change from ...
-1
votes
1answer
861 views
dmesg gave errors blk_update_request: I/O error, dev xxx, sector xxxxxxxxxx
I found errors by performing dmesg, seems like there're something wrong with all of disks. I keep tracking the errors until now. Here're a log from dmesg.
[Wed Mar 13 17:12:26 2019] ...
1
vote
1answer
2k views
Writing to /dev/kmsg randomly shows up in /proc/kmsg and always in dmesg?
When writing a message to /dev/kmsg while tailing /proc/kmsg the messages show up very randomly, in never shows up in /var/log/kern.log.
However, dmesg gets all the messages correctly.
Example
# ...
0
votes
1answer
540 views
Understanding a dmesg kernel warning message
I am trying to debug my kernel module.
When I run it I get the following kernel warnings, but it seems that there is no informative message like other warnings I've seen. Is it possible to get any ...
1
vote
1answer
387 views
No root permission in a docker container image
I test a Docker container (created from Nvidia CUDA image) started with the command:
docker run -i -t xxxxxx /bin/bash
I can see the root prompt, but still don't have privileges for some operations; ...
0
votes
1answer
76 views
NVIDIA usable memory 4GB instead of 6GB?
I have an the following graphics card in my laptop:
GPU: NVIDIA, GeForce GTX 1060, Max-Q Design, 6 GB VRAM
I am on Linux Mint 19.1 Cinnamon 64-bit with NVIDIA drivers version 390 official:
You can ...
0
votes
2answers
357 views
How can I configure a running kernel to output dmesg info directly to the tty, without involving any userspace programs?
There are a large variety of questions floating around the 'net from people who want to watch the output of dmesg in real time. All the suggestions and answers involve using dmesg -w, tail, journalctl ...
1
vote
0answers
378 views
Difficult tainted kernel message - anyone know the source?
It lists so many things that I can not tell the source. I see iee80211 so I thought it might be a network packet, but than I see IRQ and also modules being listed so it is really convulated.
Ubuntu ...
0
votes
1answer
85 views
how to understand the dmesg
we have redhat machine version 7.2 and each machine have disks
as
sdb
sdc
sdd
sde
sdf
in the dmesg report we get the following
[873080.996700] Buffer I/O error on device sdf, logical block ...
0
votes
1answer
221 views
Docker container is killed during performance tests
I need to understand why docker container is being killed during processing.
Short background:
we're running performance tests in RH machine. (Machine has 64GB RAM, 16 CPU) after 20 hours of run or ...
1
vote
0answers
57 views
2 LAN cables connected, 1 PCI bus and vice versa
When booting my pc with 2 LAN cables connected only one interface is registered.
03:00.0 and 04:00.0
$ dmesg | grep -P '0(3|4):00.0'
[ 0.180140] pci 0000:04:00.0: [11ab:4362] type 00 class ...
