The route of the problem is that the nvidia driver returns invalid values for PCIO, PDISPLAY and PRAMIN.
Breakpoint 6, map_mem (dev_name=0x61e250 "/dev/nvidia0") at backend.c:34 34 dev_handle_t *fd = open_dev(dev_name); (gdb) n 36 if(!fd) /* open_dev has already set the error */ (gdb) p fd $2 = (dev_handle_t *) 0x61e0d0 (gdb) n 40 nv_card->PEXTDEV = map_dev_mem(fd, nv_card->reg_address + 0x101000, 0x1000); (gdb) p dev_name $3 = 0x61e250 "/dev/nvidia0" (gdb) p /x nv_card->reg_address + 0x101000 $4 = 0xd5101000 (gdb) n 41 nv_card->PFB = map_dev_mem(fd, nv_card->reg_address + 0x100000, 0x1000); (gdb) p /x nv_card->PEXTDEV $5 = 0x7ffff7ff8000 (gdb) n 43 nv_card->PMC = map_dev_mem(fd, nv_card->reg_address + 0x000000, 0x2ffff); (gdb) p /x nv_card->PFB $6 = 0x7ffff7ff7000 (gdb) n 44 nv_card->PCIO = map_dev_mem(fd, nv_card->reg_address + 0x601000, 0x2000); (gdb) p /x nv_card->PMC $7 = 0xffffffffffffffff (gdb) n 45 nv_card->PDISPLAY = map_dev_mem(fd, nv_card->reg_address + NV_PDISPLAY_OFFSET, NV_PDISPLAY_SIZE); (gdb) p /x nv_card->PCIO $8 = 0x7ffff7ff5000 (gdb) n 46 nv_card->PRAMDAC = map_dev_mem(fd, nv_card->reg_address + 0x680000, 0x2000); (gdb) p /x nv_card->PDISPLAY $9 = 0xffffffffffffffff (gdb) n 47 nv_card->PRAMIN = map_dev_mem(fd, nv_card->reg_address + NV_PRAMIN_OFFSET, NV_PRAMIN_SIZE); (gdb) p /x nv_card->PRAMDAC $10 = 0x7ffff7fe3000 (gdb) n 48 nv_card->PROM = map_dev_mem(fd, nv_card->reg_address + 0x300000, 0xffff); (gdb) p /x nv_card->PRAMIN $11 = 0xffffffffffffffff (gdb) n 51 if(nv_card->arch & NV5X) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1039916 Title: Nvidia driver causing SIGSEGV in nvclock and smartdimmer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvclock/+bug/1039916/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
