On 2018-06-06 03:05 PM, Sam Morris wrote: > Source: xserver-xorg-video-nouveau > Followup-For: Bug #896979 > > I'm still seeing this with Xorg 1.20 (which is not unexpected). Here's a > better backtrace: > > #0 0x00007fd90edb5e7b in __GI_raise (sig=sig@entry=6) at > ../sysdeps/unix/sysv/linux/raise.c:51 > #1 0x00007fd90edb7231 in __GI_abort () at abort.c:79 > #2 0x0000557576dc55ca in OsAbort () at ../../../../os/utils.c:1350 > #3 0x0000557576dcb163 in AbortServer () at ../../../../os/log.c:877 > #4 0x0000557576dcbf85 in FatalError (f=f@entry=0x557576dfec30 "Caught > signal %d (%s). Server aborting\n") at ../../../../os/log.c:1015 > #5 0x0000557576dc26b3 in OsSigHandler (signo=11, sip=<optimized out>, > unused=<optimized out>) at ../../../../os/osinit.c:156 > #6 0x00007fd90f14cf50 in <signal handler called> () at > /lib/x86_64-linux-gnu/libpthread.so.0 > #7 0x00007fd90c027f29 in drmmode_output_dpms (output=0x557578bfaf20, > mode=3) at ../../src/drmmode_display.c:921 > #8 0x0000557576cd8813 in xf86DisableUnusedFunctions > (pScrn=0x557578a6a120) at ../../../../../../hw/xfree86/modes/xf86Crtc.c:3021 > #9 0x0000557576ce0980 in xf86RandR12CrtcSet (pScreen=<optimized out>, > randr_crtc=0x557578c33220, randr_mode=0x0, x=0, y=0, rotation=<optimized > out>, num_randr_outputs=0, randr_outputs=0x0) at > ../../../../../../hw/xfree86/modes/xf86RandR12.c:1241 > #10 0x0000557576d20122 in RRCrtcSet (crtc=<optimized out>, mode=0x0, x=0, > y=0, rotation=rotation@entry=1, numOutputs=numOutputs@entry=0, outputs=0x0) > at ../../../../randr/rrcrtc.c:774 > #11 0x0000557576d219fe in ProcRRSetCrtcConfig (client=0x557578a598f0) at > ../../../../randr/rrcrtc.c:1401 > #12 0x0000557576c660b8 in Dispatch () at ../../../../dix/dispatch.c:478 > #13 0x0000557576c6a0b8 in dix_main (argc=13, argv=0x7ffd47296448, > envp=<optimized out>) at ../../../../dix/main.c:276 > #14 0x00007fd90eda2a87 in __libc_start_main (main=0x557576c53d80 <main>, > argc=13, argv=0x7ffd47296448, init=<optimized out>, fini=<optimized out>, > rtld_fini=<optimized out>, stack_end=0x7ffd47296438) at > ../csu/libc-start.c:310 > #15 0x0000557576c53dba in _start () > > (gdb) frame 7 > #7 drmmode_output_dpms (output=0x557578bfaf20, mode=3) at > ../../src/drmmode_display.c:921 > 921 in ../../src/drmmode_display.c > > Looking at that file in nouveau's source code: > > static void > drmmode_output_dpms(xf86OutputPtr output, int mode) > { > drmmode_output_private_ptr drmmode_output = output->driver_private; > drmModeConnectorPtr koutput = drmmode_output->mode_output; > drmModePropertyPtr props; > drmmode_ptr drmmode = drmmode_output->drmmode; > int mode_id = -1, i; > > for (i = 0; i < koutput->count_props; i++) { // <-- this line! > props = drmModeGetProperty(drmmode->fd, koutput->props[i]); > if (props && (props->flags & DRM_MODE_PROP_ENUM)) { > if (!strcmp(props->name, "DPMS")) { > mode_id = koutput->props[i]; > drmModeFreeProperty(props); > break; > } > drmModeFreeProperty(props); > } > } > > Examining some variables: > > (gdb) p i > $7 = 0 > > (gdb) p koutput > $8 = (struct _drmModeConnector *) 0x0
Looks like the nouveau driver needs something like https://cgit.freedesktop.org/xorg/driver/xf86-video-amdgpu/commit/?id=f4107f67f147e2500582fc36cf0f0f76bc1ef098 -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Mesa and X developer