Hi, On Thu, Apr 23, 2020 at 05:32:32AM -0700, Rolf Pedersen wrote: > Hi Folks, > I just subscribed after having trouble with this card that worked for 3 > years on Skylake i5-6500 but stopped tuning when I moved it to AMD Ryzen 5 > 3400G machine. I found the workaround in the archived thread referenced in > the subject line and don't know any way to reply directly to it: > https://www.spinics.net/lists/linux-media/msg114563.html > > My card is ATSC as on this page: > https://www.kernel.org/doc/html/v4.10/media/v4l-drivers/cx23885-cardlist.html > 57 Hauppauge WinTV-QuadHD-ATSC 0070:6a18, 0070:6b18 > > and > > [rolf@x570i coup]$ lspcidrake -v | grep Conexant > cx23885 : Conexant Systems, Inc.|CX23887/8 PCIe Broadcast Audio and > Video Decoder with 3D Comb [MULTIMEDIA_VIDEO] (vendor:14f1 device:8880 > subv:0070 subd:6b18) (rev: 04) > cx23885 : Conexant Systems, Inc.|CX23887/8 PCIe Broadcast Audio and > Video Decoder with 3D Comb [MULTIMEDIA_VIDEO] (vendor:14f1 device:8880 > subv:0070 subd:6a18) (rev: 04) > > Neither scan, dvbscan, nor w_scan2, nor Kaffeine TV, while finding working > frequencies, could divulge any services. The workaround was in the > referenced post: cx23885.debug=8 > > I've seen another report of a different kernel option that worked on Ryzen: > |cx23885.dma_reset_workaround=2 here: > https://www.dslreports.com/forum/r32639318-SFF-3400G-build#32640298 > > Ok. Just wanted to join the chorus with a *metoo* in case I can provide > some (guided) forensics. So there is a commit for a related issue: https://git.linuxtv.org/media_tree.git/commit/?id=4bd46aa0353e022c2401a258e93b107880a66533 That is kernel v5.0 and higher. So: 1. What kernel are you using? 2. What is the full lspci -n of your machine? Thanks, Sean
