Hi Bevil, I'm a maintainer of Linux FireWire subsystem, and I apologize to trouble you. Indeed, we can see unexpected system reboot in the following combination:
* Linux kernel version 6.5 or later * Any kind of AMD Ryzen machines * A kind of IEEE 1394 host controller which consists of: ** Asmedia ASM1083 (PCI/PCIe bridge) ** VIA VT6306/6307/6308 (1394 OHCI host controller) You can see my short description about the issue in my PR to Linus for version 6.7 kernel. * https://lore.kernel.org/all/20231105144852.GA165906@workstation.local/ The host controller card brings some kind of hardware trouble to the machine of AMD Ryzen architecture as a result of change added to 1394 OHCI driver (firewire-ohci), while I never figure out the mechanism yet, since the system reboots without any kind of information in console output. I continue to investigate further by every single way I can think of... At present, no workaround found. I confirm that some portion to exclude the above condition enable system work again; e.g. usage of IEEE 1394 host controller with VIA6315 or VIA6305 connected with PCI bus without the bridge chip. Regards -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2043905 Title: VT6307 IEEE1394 card causes reboot loop Status in Linux: In Progress Status in linux package in Ubuntu: New Bug description: used the live USB for Kubuntu and UbuntuStudio 23.10 as well as upgraded to Mantic 6.5.0-10-generic from a Lunar 6.2.0-36 that works... all of the 6.5.0 64 bit kernel versions do a reboot loop prior to the splash screen display. Processor is an AMD Ryzen 5600X, MSI MPG B550 GAMING PLUS Motherboard with 64 gig 3200 ddr4 ram. AMD Radeon RX6600 graphics... latest BIOS firmware is installed, "fwupdmrg refresh --force && fwupdmrg update" in root terminal reports no available updates. in the advanced options of grub I can boot into mantic with the lunar 6.2.0-36 kernel. Cell phone video capture of the bad boot included... Further testing found that a Mantic beta July 3rd build will boot (6.3 kernel) booting to the current live Kubuntu USB with the 6.5.0-9 kernel and removing hardware 1 piece at a time then replacing if the loop occurred found that as soon as a VT6307 PCIe card is removed the 6.5.0-9 and 6.5.0-10 kernels will boot properly. as soon as the card is reinstalled the panic reboot loop starts up again... If there was a log generated from the loop I have been unable to find one in the /var/log directory... I have been unable to get kdump to work... To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/2043905/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
