(In reply to comment #13) > > It's a bit of a mystery unfortunately. Adding to the annoyance, Ben said > that it does work just fine on his NVC8, although he has the less powerful > versions. Could be something with high ROP/TPC/GPC counts not being handled. > (Or multiple PARTs?) > > That might actually be an interesting experiment -- before loading nouveau, > mask out a bunch of the units and see if it helps. If it does, find the > "breaking" point. > > This is the code that computes that stuff: > > http://cgit.freedesktop.org/~darktama/nouveau/tree/nvkm/engine/graph/nvc0. > c#n1330 > > priv->rop_nr = (nv_rd32(priv, 0x409604) & 0x001f0000) >> 16; > priv->gpc_nr = nv_rd32(priv, 0x409604) & 0x0000001f; > for (i = 0; i < priv->gpc_nr; i++) { > priv->tpc_nr[i] = nv_rd32(priv, GPC_UNIT(i, 0x2608)); > priv->tpc_total += priv->tpc_nr[i]; > } > > Step 1: Print out the various values (i.e. number of ROPs, GPCs, and the > per-GPC TPC counts). > Step 2: Artificially lower them (to, e.g., 1) and see if it helps. If it > does, figure out which of the values matter and where the breaking points > are. > > If it doesn't help, perhaps the units need to be disabled a little harder, > e.g. by setting 0x22584/0x22588.
Can you describe more detailed what I need to do? I'm afraid I'm not so advanced at this moment to understand everything in your comment. Maybe not in comments but by e-mail doityourselft...@gmail.com -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-nouveau in Ubuntu. https://bugs.launchpad.net/bugs/925048 Title: [GTX 580] X seems to hang a login prompt -- PFIFO errors in dmesg To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/925048/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
