Tip: my notes on 28's new core dump
by ToddAndMargo
Hi All,
Fedora changed the way core dumps are generated.
These are my notes:
-T
Fedora 28+ core dumps:
As of Fedora 28, core dumps have to be extracted by the administrator
(root):
These commands will give you a list of core dumps
# coredumpctl --reverse list
# ls -l /var/lib/systemd/coredump/
You need the PID of the core dumps parent to create a coe dump:
coredumpctl has a PID column. "--reverse" puts the youngest at the
top:
# coredumpctl --reverse list
TIME PID UID GID SIG COREFILE EXE
Wed 2018-02-21 12:00:46 PST 20759 0 0 6 missing
/opt/Cimcor/CimTrak/CimT
# ls -l /var/lib/systemd/coredump/
-rw-r-----. 1 root root 1622777 May 31 03:04
core.CimTrakServer\x2eb.0.a91f9e4dc86f4e7ea65bd7dbd7eb5429.28086.1527761078000000.lz4
The second to last set of numbers (28086 above) is the PID
To find a particular program's youngest pid (sub program name for
"CimTrak"):
# coredumpctl --reverse list | perl6 -e 'my $x=slurp(); for split
"\n", $x -> $Line {if $Line ~~ / CimTrak / { say $Line.words[4]; last } };'
9405
To extract a core dump:
# coredumpctl dump {PID} --output /tmp/{PID}.core
This will place the Core file will be located in /tmp/
For example:
# coredumpctl dump 9405 --output /tmp/9405.core
4 years
Re: Strange issue with dhcpd and laster kernel upgrade?
by Ed Greshko
Adding "list" back into the reply...
On 06/02/18 11:41, Michael D. Setzer II wrote:
>>
>> These are the following things I would do/check....
>>
>> 1. You are running xfce and if you are also running lightdm as your display manager
>> I would, based on another thread, check to see if the system has a
>> /usr/lib64/security/pam_kwallet5.so file.
> I had seen the messages earlier about issues with the pam_kwallet, so I
> believe I removed that package on all my systems at home, but will have to
> double check on these machines, since they are not my primary machines.
>
> Generally have both gnome and xfce on machines. Usually local login is with
> gnome, vnc session using the xfce.
OK...
>> 2. Go to /var/lib/NetworkManager/ and delete any *lease files and then try again.
> Will check this, but getting ready to leave for summer vacation in 3 days, so
> will have to see.
> Not sure how this would get changed from one kernel to another. All the
> previous kernels worked, and rebooting with the prior kernel works, so not
> sure what would be changing configuration.
OK.... These are just things that I would do. In picking what I do I push out the
natural tendency to think "that can't be it". :-)
>
>> 3. Again in /var/lib/NetworkManager/ check to see if there is a difference in the
>> dhclient-enp0s3.conf file in the working case v.s. failing case
> Again, not sure how booting a different kernel would make modifications to
> this file?
>
> Same with the other 3, why it works fine with the prior kernel, but not with the
> latest, would leave me to think it is something that is different in the latest
> kernel. I didn't see anything that showed the exact problem, and that is why I
> included all of the journal stuff.
I leave no stone un-turned.
The dhclient-enp0s3.conf is a generated file. I think you'll notice that if you boot
with a static IP address that file doesn't exist and when you boot with "automatic"
addresses configured it will have the timestamp of when the boot occured.
>
> Thanks again, for the time.
>
>
>> 4. Use wireshark and verify that the DHCP request is actually going out on the wire.
>>
>> 5. Long shot.... "systemctl stop firewalld" and try again.
>>
>> 6. Longer shot.... "setenforce 0" and try again.
>>
I probably should have put #4 at #1.
--
Conjecture is just a conclusion based on incomplete information. It isn't a fact.
4 years
Strange issue with dhcpd and laster kernel upgrade?
by Michael D. Setzer II
Have just had an issue with the dhcp ip addresses no longer working with the
latest kernels on my Fedora 27 machines.
Have 4 machines at my house, 2 have fixed IP addresses, so had no
problems, but the other 2 machines stopped getting IPs. Didn't think anything
of it, and just assigned them fixed IP addresses.
Have an old notebook that I had just been using, and did the updates. Then
rebooted, and it also would no longer get a connection with the 4.16.12
kernel. Rebooted to the 4.16.11, and it connected with no problem??
Rebooted again with the 4.16.12, and it just shows connecting, but no
connection.
Changed the setup to hard code an IP address on the wifi routers range, and
then it connects to the wifi just fine.
So Wifi and dhcp connection works fine with 4.16.11, but fails with 4.16.12??
Works with the IP address hard coded, so is this a kernel issue or what?
Thanks.
+------------------------------------------------------------+
Michael D. Setzer II - Computer Science Instructor (Retired)
mailto:mikes@guam.net
mailto:msetzerii@gmail.com
Guam - Where America's Day Begins
G4L Disk Imaging Project maintainer
http://sourceforge.net/projects/g4l/
+------------------------------------------------------------+
http://setiathome.berkeley.edu (Original)
Number of Seti Units Returned: 19,471
Processing time: 32 years, 290 days, 12 hours, 58 minutes
(Total Hours: 287,489)
BOINC@HOME CREDITS
ROSETTA 65562597.392201 | ABC 16613838.513356
SETI 109375858.605587 | EINSTEIN 141132520.999240
4 years
Re: How to change the default Internet browser on F28?
by R. G. Newbury
On 2018-06-01 06:52 PM, users-request(a)lists.fedoraproject.org wrote:
> Subject: Re: How to change the default Internet browser on F28?
> On Thu, May 31, 2018 at 11:03 PM, Ed Greshko<ed.greshko(a)greshko.com> wrote:
>>> How can I change the default Internet browser on F28?
>>
>> Your question may, or may not, have a simple answer. It all depends on what you mean
>> by "default browser" and the desktop you're using as well as the applications calling
>> the browser.
>>
>> Anyway, I use KDE as my DE and Chrome as my browser. I also use T-Bird for my mail
>> client where most of the links are that I want to open.
>>
>> So, the following works for me....
>>
>> xdg-settings set default-web-browser google-chrome.desktop
>> xdg-settings set default-url-scheme-handler http google-chrome.desktop
>> xdg-settings set default-url-scheme-handler https google-chrome.desktop
>>
I have the same problem on F27. And it is quite annoying.
F27, KDE, Chrome, Thunderbird.
Using xdg-settings does not work *for me*, nor do the various settings
in the Thunderbird config, such as network.protocol-handler-app.http
Any other possibilities? Anyone? Bueller?
--
R. Geoffrey Newbury
4 years
tetex-xdvi required by texmaker broken dependency
by olivares33561@protonmail.com
Dear fedora users,
I have a problem updating. I encounter a problem with tetex-xvdi which does not exist but is required by texmaker:
[root@localhost ~]# ./up2date
18 files removed
Cache was expired
0 files removed
Fedora 28 - x86_64 - Updates 647 kB/s | 14 MB 00:22
Fedora 28 - x86_64 608 kB/s | 60 MB 01:41
Last metadata expiration check: 0:00:19 ago on Fri 01 Jun 2018 12:08:14 PM CDT.
Dependencies resolved.
Problem 1: package texmaker-1:5.0.2-4.fc28.x86_64 requires tetex-xdvi, but none of the providers can be installed
- package texlive-xdvi-7:20170520-29.fc28.x86_64 obsoletes texlive-xdvi-bin < 7:20170520 provided by texlive-xdvi-bin-6:svn40750-42.20160520.fc28.x86_64
- cannot install the best update candidate for package texmaker-1:5.0.2-4.fc28.x86_64
- cannot install the best update candidate for package texlive-xdvi-6:svn40768-42.fc28.2.noarch
Problem 2: problem with installed package texmaker-1:5.0.2-4.fc28.x86_64
- package texmaker-1:5.0.2-4.fc28.x86_64 requires tetex-xdvi, but none of the providers can be installed
- package texlive-xdvi-7:20170520-29.fc28.x86_64 obsoletes texlive-xdvi-bin < 7:20170520 provided by texlive-xdvi-bin-6:svn40750-42.20160520.fc28.x86_64
- cannot install the best update candidate for package texlive-xdvi-bin-6:svn40750-42.20160520.fc28.x86_64
Nothing to do.
Complete!
in up2date file I have :
[root@localhost ~]# cat up2date
#!/bin/sh
dnf clean all
sleep 4
dnf clean metadata
sleep 4
dnf update -y
How should I troubleshoot this?
Best Regards,
Antonio
Sent from [ProtonMail](https://protonmail.ch), encrypted email based in Switzerland.
4 years
fix icon
by Neal Becker
I wanted to test emacs-26.1 from rawhide, so installed the rpms on f28.
Decided it broke too many things, so reverted with dnf distro-sync.
Now I'm back to emacs-25.3, but the icon used by emacs is the wrong one
(it's a terminal (probably from emacs-terminal), not a gnu).
How do I fix this?
4 years
tip: star tech PEXUSB311AC2
by ToddAndMargo
Also, a bit off topic, but the Star Tech PEXUSB311AC2
StarTech.com Dual Port USB 3.1 Card – 1x USB-C – 1x USB-A – 10Gbps
per port – Expansion Card – USB 3.1 PCI-E Card – USB 3 PCI
Crashes your file system on large file transfers and crashes your
boot if anything is plugged into it when you boot.
Anyone know of a card that works right? How about Siig?
4 years
F28 Backlight does not turn off
by Robert Moskowitz
This is Fedora 28 with Xfce.
I have set power manager to blank and lock the screen after 15 min. This
is a change from the default 10min.
Now the screen is black, but staying on. It is no longer turning off.
What do I need to set so that the screen turns off?
thanks
4 years