December 2020 - Arch-general - lists.archlinux.org

[arch-general] PA over JACK: excessive work?
by riveravaldez 11 Dec '20

11 Dec '20

Hi, I'm using PulseAudio over JACK and noticed in htop that while not doing nothing PA works much more than when idle alone, is this normal/right? This is what I do: Close everything that uses audio. Start JACK through qjackctl. $ pulseaudio --kill $ pulseaudio --start (So, PA now works as some kind of bridge redirecting audio through JACK.) $ pactl load-module module-jack-sink $ pactl load-module module-jack-source (So I have general sink/source ports to make connections.) But then I check htop and PA is working all the time. Is this normal? Am I doing something wrong? Thanks a lot in advance.

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[arch-general] FreeCAD and KiCAD depend on different opencascade versions
by Ricardo Band 11 Dec '20

11 Dec '20

Ohai, I'd like to use FreeCAD and KiCAD on the same system but I can't install them both from the official repos because kicad depends on opencascade und freecad depends on opencascade74. I can't install both because these two opencascades don't like to be installed together. Is their a solution in sight? Can we recompile freecad against the newer opencascade? At the moment I'm using the AppImage version of freecad and the repo version of kicad. -- Greetings Ricardo Band https:// www.ricardo.band mailto:// email(a)ricardo.band xmpp://jabber@ricardo.band

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[arch-general] CPU spikes when lid closed
by David Rosenstrauch 04 Dec '20

04 Dec '20

I've been having an odd problem. My laptop works like a charm on its own. However, when it's connected to a USB-C dock and screen, suddenly apps that were working great start eating up lots of CPU. (Such as Firefox, Thunderbird, and Zoom.) After a bit of debugging, I realized that the issue isn't even whether I'm connected to the dock, but rather whether the laptop lid is open or closed: close the lid and all those apps eat up CPU; open the lid and CPU drops and everything is groovy. I can't for the life of me figure out what's causing this, and my searching hasn't been able to turn up a clear cause or solution. Would anyone happen to have experienced the same issue, or be able to point me in the right direction as to the cause? I'm running XFCE, with the display settings set to "mirror displays" (i.e., the internal laptop screen and the external HDMI monitor). Thanks, DR

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[arch-general] Softphone
by Jörg Jellissen 03 Dec '20

03 Dec '20

Hello, i am currently searching for another software solution for a SIP Softphone on Gnome in ArchLinux. I didn't found a good solution. In AUR there is linphone available but i think this is terrible for me. Thanks for help Regards

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[arch-general] General protections faults / kernel panics with the Apple Magic Trackpad 2
by Merlin Büge 02 Dec '20

02 Dec '20

Hi all. I think I need some help with debugging an issue I have. I recently bought an "Apple Magic Trackpad 2" for reducing strain on my hand (since I have some RSI[0] issues currently), which is supported in Linux since version 4.20[1]. After connecting it to my laptop it worked instantly at first, but "sometimes" un- and replugging the trackpad crashes my system. Often it works fine, but every now and then it triggers `general protection faults` (often while opening big applications like Firefox), causes my status bar to hang up, and usually ends in a freeze. Sometimes, just before the freeze I get thrown back to the console and see a kernel panic at the end of the log. The laptop is a Thinkpad X200 running stock BIOS, Arch Linux and sway, with microcode updates enabled. I could also reproduce the issue with Gnome on Wayland. On Xfce I could not reproduce the issue, and also not on Fedora (which I installed on the same laptop to the same SSD, for testing). I'm using the trackpad only via the USB cable, not via bluetooth. Attached is a snippet from the dmesg output with debug logging enabled (appended `debug` on the kernel cmdline) showing some of the protection faults. I uploaded the full dmesg output here [2]. In this specific dmesg output, most of the protection faults happened concurrently while I was opening Firefox (several times to provoke the crash). A photo of the kernel panic can be found here [3]. This kernel bug report[4] and related arch report[5] seem related to the issue, maybe it's even the same issue? However, the kernel bug report mentions that the issue only affects linux >=5.8.7. In my case, I could reproduce the issue with the following linux versions (installed from the Arch Linux archive): 4.20.0 4.20.1 4.20.3 4.20.7 5.0.0 5.0.13 5.4.74 5.2.0 5.8.6 5.8.7 5.8.8 5.9.2, 5.9.4 5.10rc-2 The USB ID of the trackpad is 05ac:0265. Because I'm very inexperienced with kernel debugging I would appreciate any help/pointers to what would be wise to test next. If this is likely to be an issue with the Linux kernel and not arch-related (unsure, since I could not reproduce it on other distros), please tell me so and I will post to the kernel bug tracker instead. Thanks! Merlin Büge [0]: https://web.eecs.umich.edu/~cscott/rsi.html [1]: https://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid.git/commit/?h=for… [2]: https://0x0.st/idkH.json [3]: https://0x0.st/idkz.jpg [4]: https://bugzilla.kernel.org/show_bug.cgi?id=209239 [5]: https://bugs.archlinux.org/task/67860 -- Merlin Büge

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[arch-general] gnupg version
by Alexander Epaneshnikov 01 Dec '20

01 Dec '20

hello. GnuPG 2.2.25 has been released it fixes bug which affects me. but arch only has Version 2.2.24-1 in testing. my question is why it haven't been updated? if the maintainer simply does not have time yet, then I understand, but maybe there is another reason? -- Sincerely, Alexander.

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