Bug 31032

Summary:	Legacy PCI support in Cauldron/Mageia 9
Product:	Mageia	Reporter:	Edward <epp>
Component:	Release (media or process)	Assignee:	Kernel and Drivers maintainers <kernel>
Status:	RESOLVED WORKSFORME	QA Contact:
Severity:	normal
Priority:	Normal	CC:	lewyssmith, sysadmin-bugs
Version:	Cauldron
Target Milestone:	---
Hardware:	All
OS:	Linux
Whiteboard:
Source RPM:		CVE:
Status comment:
Attachments:	dmesg output lspci output

Description Edward 2022-10-26 18:06:30 CEST

Description of problem:

I installed Mageia 8 in a new SSD, it detected the legacy PCI sound card, a Creative Sound Blaster Live! 5.1, using snd_emu10k1. 

Once this was upgraded to Cauldron, I discovered the audio had defaulted to the built-in audio on my AMD Radeon HD 5450 video card (PCI-E x16), which required the speakers to be plugged into the back of the display in order to obtain audio.

Running "lspci -v" did not show the Creative card at all. I have since removed the Creative card from the desktop.

Has legacy PCI support been removed from Cauldron, or perhaps the 6.x kernel?

Comment 1 Lewis Smith 2022-10-27 08:49:20 CEST

Thank you for this observation, which looks rather significant.
Perhaps it is something for Release Notes?

Assigning to kernel for a quick opinion.

Assignee: bugsquad => kernel
CC: (none) => lewyssmith

Comment 2 Thomas Backlund 2022-10-27 10:32:01 CEST

nope, no legacy pci gone, and it wont be removed for decades...
the pci bus is good enough / still in use for a lot of devices..

We still even support the stone age ISA bus :)

So you need to check logs for what it complains about...

attach dmesg output from mga8 and cauldron, so we can see if kernel is unhappy about something on that system...

Comment 3 Edward 2022-10-27 11:21:00 CEST

I would have to downgrade that installation back to mga8, which is something I really do not want to do.

I can reinstall the card. Is there something specific in dmesg/logs that I need to look for?

Comment 4 Lewis Smith 2022-10-27 11:36:06 CEST

Thank you Thomas for that confirmation.
@Edward
Yes, please do.
Re-install it, boot, dmesg (to a file, attach), lspci [no need for -v here, just want to know if the card is seen] post the O/P.

Comment 5 Edward 2022-10-27 14:25:21 CEST

After reinstalling the card, the system is now seeing it. But after the 8 -> Cauldron upgrade, it didn't see it. Hmmm...

Attached are the output from lspci and dmesg. dmesg referenced the gameport on the sound card, when I searched for 'emu10k1'.

Comment 6 Edward 2022-10-27 14:27:48 CEST

Created attachment 13453 [details]
dmesg output

Comment 7 Edward 2022-10-27 14:28:05 CEST

Created attachment 13454 [details]
lspci output

Comment 8 Lewis Smith 2022-10-29 22:15:18 CEST

(In reply to Edward from comment #5)
> After reinstalling the card, the system is now seeing it. But after the 8 ->
> Cauldron upgrade, it didn't see it. Hmmm...
Can we close this now, to re-open if necessary if another user reports 'losing' a PCI card after upgrade? That would warrant an ERRATA, too early yet.

Status: NEW => RESOLVED
Resolution: (none) => WORKSFORME