On Fri, Sep 23, 2022 at 09:20:30PM +0200, Grzegorz Halat wrote: > On Wed, Sep 16 2020 at 12:12, Stefan Bühler wrote: > > this quirk breaks our serial ports PCIe card (i.e. we don't see any > > output from the connected devices; no idea whether anything we send > > reaches them): > > I have the same problem, also with a PCI serial adapter from Oxford > Semiconductor. I've bisected the kernel and it was introduced in > b88bf6c3b6ff. When the system is booted with "pci=noioapicquirk" > then the PCI card works fine. The CPU is Intel Xeon E5-2680 v3 @ > 2.50GHz. > > Sean, do you have any news about this issue? I think Sean has moved on and isn't available to work this issue. To help whoever *can* work on it, would you mind attaching the complete dmesg log and "sudo lspci -vv" output for your system? Then we can potentially tweak the quirk to not break your system. Bjorn
