ppc September 2020

ppc@lists.fedoraproject.org

3 participants
3 discussions

4k vs 64k page size, building both flavours of the kernel
by Daniel Pocock 17 Sep '20

17 Sep '20

Hi all, I recently discovered[1] that a bunch of issues on POWER9 go away if I use a 4k page size. Examples: - Nouveau works with 4k, not with 64k - WebRTC in Firefox wasn't working consistently with 64k, does work consistently with 4k - btrfs, which will be Fedora's default filesystem from Fedora 33, is constrained by page size. btrfs filesystems can only be used on systems with the same page size as the system where the filesystem was created with mkfs These issues are probably more relevant for users of workstations, such as the Talos II and Blackbird from Raptor. I looked in the kernel configs[2] and I noticed you only do a build with 64k enabled. Would you be willing to support an additional build with 4k, e.g. CONFIG_PPC_64K_PAGES=n Thanks for your efforts supporting ppc64 Regards, Daniel 1. https://forums.raptorcs.com/index.php/topic,200.msg1460.html 2. https://src.fedoraproject.org/rpms/kernel/blob/master/f/kernel-ppc64le-rhel…

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App suggestion Shortwave
by Karl 02 Sep '20

02 Sep '20

Hello Dan, since Gradio (I can't listen to radio stations anymore) has been discontinued I would like to suggest Shortwave as a replacement: https://gitlab.gnome.org/World/Shortwave I tried to compile it myself, but unfortunately I get this error: https://pastebin.com/iHuhYz4L sqlite-3.33.0-1.fc32.ppc64le is already installed.

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Crackling sound since Kernel 5.6.x
by Karl 01 Sep '20

01 Sep '20

Hello to all, I have this hardware: https://wiki.raptorcs.com/wiki/User:MPC7500 Since Kernel 5.6.x I have crackling sound (I’m using the Radeon for sound output). It sounds similar when the speech-dispatcher is active. On Kernel 5.4 I have to remove the speech-dispatcher (this pops-up from time to time) to get a crystal clear sound. See link to the Kernel 5.4 alsa-info.sh output and Kernel 5.6 alsa-info.sh output: Kernel 5.4: http://alsa-project.org/db/?f=a51d43c18273c3c79d4341e251a32542e2ee3714 Kernel 5.6: https://alsa-project.org/db/?f=97cd639a2a416f2a5875b7534dd39ce38c36bd93 Maybe it has something to do with this? https://www.phoronix.com/scan.php?page=news_item&px=Linux-5.6-Sound This problem I have also an F32. Everything is fine with 5.4. How can I localize the problem? Any help is appreciated Karl P. S. I’m new to Linux so I sadly can’t bisecting a bug til now.

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ppc September 2020