Control: tags -1 + moreinfo Hi,
On Tue, Mar 17, 2026 at 08:18:17AM +0100, Bernd Schumacher wrote: > Package: src:linux > Version: 6.12.73-1 > Severity: normal > X-Debbugs-Cc: [email protected] > User: [email protected] > Usertags: amd64 > > Dear Maintainer, > > *** Reporter, please consider answering these questions, where appropriate *** > > * What led up to the situation? > I have a kvm with linux-image-6.1.0-43-amd64 running vdr and femon. > On the host I do echovfio-pci >/sys/bus/pci/devices/0000:$PCI/driver_override. > Then I give the DVB Adapter to the kvm. > > It works, if I boot linux-image-6.12.63+deb13-amd64 on the host. > If it works dmesg on the kvm says: > 05:00.0 Multimedia controller: Digital Devices GmbH Octopus DVB Adapter > dmesg: > [ 2.443770] dvbdev: DVB: registering new adapter (DDBridge) > [ 2.443772] dvbdev: DVB: registering new adapter (DDBridge) > ... > [ 2.694180] ddbridge 0000:05:00.0: attach tuner input 0 adr 60 > [ 2.694183] ddbridge 0000:05:00.0: DVB: registering adapter 0 frontend 0 > (STV090x Multistandard)... > ... > [ 2.738542] ddbridge 0000:05:00.0: attach tuner input 1 adr 63 > [ 2.738545] ddbridge 0000:05:00.0: DVB: registering adapter 1 frontend 0 > (STV090x Multistandard)... > > > It does not work, if I boot linux-image-6.12.73+deb13-amd64 on thehost. > If it does not work dmesg on th kvm says: > [ 2.413879] ddbridge 0000:05:00.0: detected Digital Devices Cine S2 V6 DVB > adapter > [ 2.413901] ddbridge 0000:05:00.0: cannot read registers > [ 2.414569] ddbridge 0000:05:00.0: fail > > If I run femon it says: > femon: opening frontend failed: No such file or directory > > * What exactly did you do (or not do) that was effective (or > ineffective)? > * What was the outcome of this action? > * What outcome did you expect instead? > > *** End of the template - remove these template lines *** Given you have the range 6.12.63 (good) .. 6.12.73 (bad), can you 1. confirm if 6.12.74-2 still as well is broken and if so 2. would you be able to bisect the upstream changes beween 6.12.63 and 6.12.73 to identify the commit which introduces this regression for you? (Do you need instructions for that?). Regards, Salvatore
