users August 2020

users@lists.fedoraproject.org

114 participants
105 discussions

Interactive desktop latency
by Christopher Anderson 04 Aug '20

04 Aug '20

I am using FC32 on a AMD 3970X with HT off. I have a program which maps a System V shm segment using huge pages, then references random locations for 10 seconds to find what the latency of memory is. The funny thing is, the latency is better when printing to a terminal (xterm) under Xwayland, and worse when redirecting to a file or piping through less: $ test -m sysv2m:shm.test -c 8 -p 100 -x int -o find -n 10 ival tot op/s ns 10.1 510000000 50605422 19.8 $ test -m sysv2m:shm.test -c 8 -p 100 -x int -o find -n 10 | less ival tot op/s ns 10.1 350000000 34621166 28.9 The difference printing to stdout is significant, but it only happens under XWayland in a terminal, not on the console. The above use 8 MB shm of 2M page size. I've looked at the CPU frequency, different nice priorities, tried different cpupower governors, I can't explain this weirdness. This does not occur under CentOS 8, even when using the same binary compiled under FC32. When I use the prefetch instruction, prefetching the next 2 references, a command line option, the performance difference disappears: $ test -m sysv2m:shm.test -c 8 -p 100 -x int -o find -n 10 -f 2 ival tot op/s ns 10.2 550000000 54143996 18.5 $ test -m sysv2m:shm.test -c 8 -p 100 -x int -o find -n 10 -f 2 | less ival tot op/s ns 10.1 550000000 54260358 18.4

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pgadmin3 in Fedora 32 Workstation
by Anil Felipe Duggirala 04 Aug '20

04 Aug '20

hello, I have 2 separate questions regarding pgadmin installation in Fedora 32. 1. pgadminIII, I believe only supports postgresql up to version 11.x. The default version (fedora repo) of postgresql is 12.3. So the pgadmin3 (pgadmin4 is not available) package in the default repository is not compatible with the default postgresql package. Is this correct? 2. A couple of days ago, my terminal prompt changed from "username@machinename", to "username@localhost". Did this maybe happen after installing postgresql and/or pgadmin? Could anyone point me in the direction of the documentation that explains how this all (domains, setting them in Fedora, implications, etc.) works? thank you very much, Anil

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rkhunter --update fails.
by home user 03 Aug '20

03 Aug '20

(f31, gnome; just patched) Before doing an rkhunter scan, I do an rkhunter database update. Today, that's not working: ----- bash.6[~]: rkhunter --update [ Rootkit Hunter version 1.4.6 ] Checking rkhunter data files... Checking file mirrors.dat [ Update failed ] Checking file programs_bad.dat [ Update failed ] Checking file backdoorports.dat [ Update failed ] Checking file suspscan.dat [ Update failed ] Checking file i18n versions [ Update failed ] Please check the log file (/var/log/rkhunter/rkhunter.log) bash.7[~]: ----- The relevant part of the logs is here: ----- [10:44:44] Warning: Download of 'mirrors.dat' failed: Unable to determine the latest version number. [10:44:44] Checking file mirrors.dat [ Update failed ] [10:44:44] Info: Executing download command '/usr/bin/wget -q -O "/var/lib/rkhunter/rkhunter.upd.rJwBkFr06W" http://rkhunter.sourceforge.net/1.4/programs_bad.dat 2>/dev/null' [10:44:45] Info: Download failed - 1 mirror(s) left. [10:44:45] Info: Created temporary file '/var/lib/rkhunter/mirrors.dat.sndtdOPXmE' [10:44:45] Info: The mirrors file has been rotated: /var/lib/rkhunter/db/mirrors.dat [10:44:45] Info: Executing download command '/usr/bin/wget -q -O "/var/lib/rkhunter/rkhunter.upd.rJwBkFr06W" http://rkhunter.sourceforge.net/1.4/programs_bad.dat 2>/dev/null' [10:44:45] Warning: Download of 'programs_bad.dat' failed: Unable to determine the latest version number. [10:44:45] Checking file programs_bad.dat [ Update failed ] [10:44:45] Info: Executing download command '/usr/bin/wget -q -O "/var/lib/rkhunter/rkhunter.upd.rJwBkFr06W" http://rkhunter.sourceforge.net/1.4/backdoorports.dat 2>/dev/null' [10:44:45] Info: Download failed - 1 mirror(s) left. [10:44:45] Info: Created temporary file '/var/lib/rkhunter/mirrors.dat.cPKocU0Wox' [10:44:45] Info: The mirrors file has been rotated: /var/lib/rkhunter/db/mirrors.dat [10:44:45] Info: Executing download command '/usr/bin/wget -q -O "/var/lib/rkhunter/rkhunter.upd.rJwBkFr06W" http://rkhunter.sourceforge.net/1.4/backdoorports.dat 2>/dev/null' [10:44:46] Warning: Download of 'backdoorports.dat' failed: Unable to determine the latest version number. [10:44:46] Checking file backdoorports.dat [ Update failed ] [10:44:46] Info: Executing download command '/usr/bin/wget -q -O "/var/lib/rkhunter/rkhunter.upd.rJwBkFr06W" http://rkhunter.sourceforge.net/1.4/suspscan.dat 2>/dev/null' [10:44:46] Info: Download failed - 1 mirror(s) left. [10:44:46] Info: Created temporary file '/var/lib/rkhunter/mirrors.dat.4cvVwEkfFa' [10:44:46] Info: The mirrors file has been rotated: /var/lib/rkhunter/db/mirrors.dat [10:44:46] Info: Executing download command '/usr/bin/wget -q -O "/var/lib/rkhunter/rkhunter.upd.rJwBkFr06W" http://rkhunter.sourceforge.net/1.4/suspscan.dat 2>/dev/null' [10:44:46] Warning: Download of 'suspscan.dat' failed: Unable to determine the latest version number. [10:44:46] Checking file suspscan.dat [ Update failed ] [10:44:46] Info: Executing download command '/usr/bin/wget -q -O "/var/lib/rkhunter/rkhunter.upd.rJwBkFr06W" http://rkhunter.sourceforge.net/1.4/i18n/1.4.6/i18n.ver 2>/dev/null' [10:44:47] Info: Download failed - 1 mirror(s) left. [10:44:47] Info: Created temporary file '/var/lib/rkhunter/mirrors.dat.5lRNNWqySI' [10:44:47] Info: The mirrors file has been rotated: /var/lib/rkhunter/db/mirrors.dat [10:44:47] Info: Executing download command '/usr/bin/wget -q -O "/var/lib/rkhunter/rkhunter.upd.rJwBkFr06W" http://rkhunter.sourceforge.net/1.4/i18n/1.4.6/i18n.ver 2>/dev/null' [10:44:47] Checking file i18n versions [ Update failed ] [10:44:47] Warning: Download of 'i18n.ver' failed: Unable to determine the latest version number. ----- Today is the first I've seen this happen. This happened both before and after doing today's "dnf upgrade". Trying "dnf upgrade rkhunter" does nothing. Is the problem on my workstation or somewhere else? If it's on my workstation, how do I fix it? thank-you in advance, Bill.

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Re: Fedora Zoom? -
by J.Witvliet＠mindef.nl 03 Aug '20

03 Aug '20

Have a look at jitsi. Plenty info on the web, including on YouTube. From: "Bob Goodwin" <bobgoodwin(a)fastmail.us<mailto:bobgoodwin@fastmail.us>> Date: Monday, 3 August 2020 at 17:54:00 To: "Community support for Fedora users" <users(a)lists.fedoraproject.org<mailto:users@lists.fedoraproject.org>> Subject: Fedora Zoom? - I have a request from the VA to do a video interview rather than the usual secure text messages. "Do you have the ability to do a video appointment (you would need a computer with a camera or a tablet or a smartphone)." We have iPhones etc. that might work but my daughter suggests that I need 'Zoom' on my Fedora 32 computer since I have trouble with the smaller mobile devices. Is there a Linux equivalent application I can run from my desktop workstation? Bob -- Bob Goodwin - Zuni, Virginia, USA http://www.qrz.com/db/W2BOD FEDORA-32/64bit LINUX XFCE Fastmail POP3 _______________________________________________ users mailing list -- users(a)lists.fedoraproject.org To unsubscribe send an email to users-leave(a)lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org Dit bericht kan informatie bevatten die niet voor u is bestemd. Indien u niet de geadresseerde bent of dit bericht abusievelijk aan u is toegezonden, wordt u verzocht dat aan de afzender te melden en het bericht te verwijderen. De Staat aanvaardt geen aansprakelijkheid voor schade, van welke aard ook, die verband houdt met risico's verbonden aan het elektronisch verzenden van berichten. This message may contain information that is not intended for you. If you are not the addressee or if this message was sent to you by mistake, you are requested to inform the sender and delete the message. The State accepts no liability for damage of any kind resulting from the risks inherent in the electronic transmission of messages.

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Issue w Zoom - "sharing screen"
by Max Pyziur 03 Aug '20

03 Aug '20

Greetings, Since we're discussing Zoom, one problem that I've had is sharing a screen while I'm presenting. Situation: I've prepared a presentation/powerpoint. I open it in Libreoffice, I then click Slide Show -> Start from Current Slide Continue then with Zoom. When it's my turn to share my powerpoint, it's hit or miss; sometimes it works, sometimes it doesn't. Since Libreoffice does it as a fork, it's never clear from the Zoom selection which selection is for the full screen, and which is for the regular libreoffice screen. Anyone else have to deal with something like this? Thanks, Max pyz(a)brama.com

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My way of remembering the nmcli initialism
by ToddAndMargo 03 Aug '20

03 Aug '20

Hi All, If you have trouble remembering the initialism "nmcli" like I do, this is my trick for remembering it: (N)etwork (M)anager (C)ommand (L)ine (I)nterface :-) Now all I have to do is remember "Network Manager". :'( -T -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Computers are like air conditioners. They malfunction when you open windows ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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pgadmin3 in Fedora 32 Workstation
by Anil Felipe Duggirala 03 Aug '20

03 Aug '20

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Kernel gcc mismatch?
by Neil Bird 03 Aug '20

03 Aug '20

Am I misunderstanding something? I'm trying to update my local NVidia binary driver for the latest couple of kernels (5.7.10-201.fc32.x86_64 and later), but it's failing to build because: *** Failed CC version check. Bailing out! *** Recent kernels are still all being built with gcc 10.1.1 so far as I can tell (even the latest has CONFIG_GCC_VERSION=100101), but I now have gcc 10.2.1 installed and 10.1.1 is not available (well, not immediately through dnf, I have yet to rummage through caches/archives). Is my system out of sync or are the packages? -- [phoenix@fnx ~]# rm -f .signature [phoenix@fnx ~]# ls -l .signature ls: .signature: No such file or directory [phoenix@fnx ~]# exit

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SPDIF sound in F32
by Greg Woods 02 Aug '20

02 Aug '20

After wrestling all day with an ASUS Xonar SE card (with accompanying Googling), I now believe that this card cannot be made to work in Linux. Stereo output through the green line out port works fine, but SPDIF does not. "lspci" actually claims this thing is a USB controller, although as I mentioned stereo sound does work. Does anybody have a PCIe sound card that is known to work with SPDIF 5.1 surround sound output? It has to be optical as those are the only digital ports on my receiver. One frustrating thing about trying to search for information online is that I come up with a lot of stuff that is way too old to be useful. For instance, a lot of the advice articles I found on getting sound working mention 4Front and OSS sound drivers, which is probably 15-20 year old information. I'm looking for first hand "yes I know this card works", or at least a pointer to something that isn't Ubuntu specific and is recent enough to be useful. Thanks, --Greg

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How to install wxFormBuilder?
by Paul Smith 02 Aug '20

02 Aug '20

Dear All, I would like to install wxFormBuilder on Fedora 32. However, I cannot find its specific rpm. Could you please help me? Thanks in advance, Paul

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