March 2018 - Arch-general - lists.archlinux.org

[arch-general] Reliability test for hard drives and SSD
by Andrey Ponomarenko 10 Aug '18

10 Aug '18

Hi there! Good news for all interested in hardware compatibility and reliability. I've started a new project to estimate reliability of hard drives and SSD in real-life conditions based on the SMART data reports collected by Linux users in the Linux-Hardware.org database since 2014. The initial data (SMART reports), analysis methods and results are publicly shared in a new github repository: https://github.com/linuxhw/SMART. Everyone can contribute to the report by uploading probes of their computers by the hw-probe tool! The primary aim of the project is to find drives with longest "power on hours" and minimal number of errors. The following formula is used to measure reliability: Power_On_Hours / (1 + Number_Of_Errors), i.e. time to the first error/between errors. Please be careful when reading the results table. Pay attention not only to the rating, but also to the number of checked model samples. If rating is low, then look at the number of power-on days and number of errors occurred. New drive models will appear at the end of the rating table and will move to the top in the case of long error-free operation. Thanks to ROSA, Arch, Fedora, Ubuntu, Debian, Mint, openSUSE, Gentoo users and others who had made this work possible by contribution to the database!

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[arch-general] [Classroom] Python for Beginners - Part 1
by fsckd 13 Jun '18

13 Jun '18

Hello, The class Python for Beginners - Part 1 will be held on Wednesday, October 04, 2017 at 16:00 UTC in the channel #archlinux-classroom on the freenode network. The class is expected to run for about 2 hours. This class will introduce you to programming with Python and how to use IPython with an editor/IDE. Commonly used built-in functions and libraries will be explained. Other topics will explored based on participant interests. The class will be screen-shared live (via YouTube), and later archived with subtitles. Questions and some discussion on IRC is expected, however the main part will be video and audio. In preparation for the class, install the Jupyter notebook. ``pacman -S jupyter`` or, in a Python 3 virtualenv, ``pip3 install jupyter``. Also check out the python-beginners git repository on Arch Classroom's GitHub[1] where you will find IPython notebooks and links to useful resources on learning Python: https://github.com/archclassroom/python-beginners pulec is an Arch Linux user since 2012, gamer and gardener. He makes a living using Linux and Python since 2013 and recently joined Red Hat. He hopes to spread IT knowledge and open source ideas to the general populace. Some code - https://github.com/Pulecz

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[arch-general] valgrind 3.13.0-6 exclusions broken again
by David C. Rankin 08 Apr '18

08 Apr '18

Devs, valgrind is reporting more memory allocated than actual. This occurred a couple of months back as well, was resolved, and is now apparently back again? I don't know if this is a regression, but for each allocation, an additional allocation is reported and up to 2^10 additional bytes are reported. Here is a short example where 1 allocation of 10-bytes is made: #include <stdio.h> #include <stdlib.h> #define NVAL 10 int main (void) { char *a = calloc (NVAL, sizeof *a); if (!a) { perror ("calloc - a"); return 1; } /* fill with [a-i] and output */ for (int i = 0; i < NVAL - 1; i++) a[i] = 'a' + i; printf ("a: '%s' (1 alloc - %lu bytes)\n", a, sizeof *a * NVAL); free (a); } However, valgrind reports 2 allocations and 1034-bytes (10 + 2^10), e.g. $ valgrind ./bin/valgrindchk ==1134== Memcheck, a memory error detector ==1134== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al. ==1134== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info ==1134== Command: ./bin/valgrindchk ==1134== a: 'abcdefghi' (1 alloc - 10 bytes) ==1134== ==1134== HEAP SUMMARY: ==1134== in use at exit: 0 bytes in 0 blocks ==1134== total heap usage: 2 allocs, 2 frees, 1,034 bytes allocated ==1134== ==1134== All heap blocks were freed -- no leaks are possible ==1134== ==1134== For counts of detected and suppressed errors, rerun with: -v ==1134== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0) I'm not even using the --atavistic option... If someone can confirm, and let me know if a bug is warranted and I'll happily file one. If I recall correctly, this would be an upstream issue, I don't think Arch messes with the exclusions in any way. Let me know what you think. -- David C. Rankin, J.D.,P.E.

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[arch-general] systemd-suspend hangs from time to time
by Bjoern Franke 02 Apr '18

02 Apr '18

Hi, from time to time, systemd-suspend hangs on my Thinkpad X140e. After starting a suspend (through e.g. closing the lid), the following happens: Mär 21 22:32:56 ostrea systemd[1]: Started Suspend. Mär 21 23:26:07 ostrea systemd[1]: Starting Suspend... Mär 21 23:26:07 ostrea systemd-sleep[11437]: Suspending system... dmesg shows: [40655.526324] PM: suspend entry (deep) [40655.526331] PM: Syncing filesystems ... done. But nothing further happens: JOB UNIT TYPE STATE 68633 systemd-suspend.service start running 68632 suspend.target start waiting After "sudo systemctl restart systemd-suspend" the laptop suspends, but I have no clue why it fails in the first place. I've searched around and found something regarding asynchronous pm, but that did not help. Kind regards Bjoern

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[arch-general] mesa-18.0.0 (currently in [testing]) graphics corruption?
by Oon-Ee Ng 29 Mar '18

29 Mar '18

Any other [testing] users getting severe graphics corruption on mesa-18.0.0? I'm on Intel graphics. Bug report already made https://bugs.archlinux.org/task/58012 but I'm worried this is something unique to my system (unlikely maintainer of mesa would NOT have noticed the symptoms I'm getting...)

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[arch-general] Wireless hardware inconsistent behaviour
by ashwin＠flatty.co 28 Mar '18

28 Mar '18

Hey everyone, I am running Manjaro Linux on a Dell Inspiron 5370. I always have low wifi signal strength and connecting to new networks is almost always a pain. The network manager applet is forever frozen and nmtui keeps dropping network connects. Is there a way I can debug this or look at solving the problem for good? I tried all options in the networking page on the archlinux wiki but none of them seem to properly solve the problem for me. Warm Regards, Ashwin.

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[arch-general] Curious about arch repository policy
by Sudarshan Kakoty 27 Mar '18

27 Mar '18

Hello... I was reading "Arch Wiki" and felt curious about that difference between extra and community repo. Some packages, such as "meson" is in the "extra" repo, whereas "ninja" is in "community" repo. The interesting fact is that - is an implicit dependency to "meson". So why that is (ninja) in the community repo? Also, some critical GNOME specific packages are part of the community repo. Even, some compilers, like Haskell is also part of the community repo. What is the exact difference between extra and community repository? I wonder, Is it really important to have that split? -- Sudarshan Kakoty <skakoty1337(a)yahoo.com>

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[arch-general] FS#57981 - [evolution] doesn't start
by Ralf Mardorf 27 Mar '18

27 Mar '18

Hi, does Evolution upgraded to 3.28.0+... still work for somebody? On my install it doesn't start anymore, see https://bugs.archlinux.org/task/57981 . Regards, Ralf

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[arch-general] Dnscryp-proxy v2 support
by Ngô Huy 26 Mar '18

26 Mar '18

Dnscrypt-proxy v1 has been deleted and then no longer active, version 2 has been released 2.0.7 <https://github.com/jedisct1/dnscrypt-proxy/releases>. Can we rebuild and support new version ? Best regards, Severus

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[arch-general] deluge post-install
by Jude DaShiell 24 Mar '18

24 Mar '18

A warning about a missing service_identity module comes up when deluge-console is used and I am probably not taking all correct steps to install that module to clear this warning. Is this something that can be left alone or has to be left alone? If I found the right module when it installs it doesn't also bring in any dependencies. Should the package build for deluge have this module and dependencies added to it? --

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