2012/6/11 Rafał Miłecki <zajec5@xxxxxxxxx>: > I'm trying to switch from fbdev to modesetting for my AMD Southern > Islands VERDE card. Of course I've KMS running just fine, radeon > module loads and sets correct resolution, dmesg looks alright > > Unfortunately Xorg doesn't start after forcing "modesetting", AFAIU > the driver doesn't provide any screens/modes. It looks like this: > (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so > (WW) Falling back to old probe method for modesetting > (II) UnloadModule: "modesetting" > (II) Unloading modesetting > (EE) Screen(s) found, but none have a usable configuration. > > Can you give me any tip on this? My X.Org X Server is 1.10.4, I'm > using xf86-video-modesetting from today's git. Any patch/trick to > debug this issue? I don't think old X server is an issue here. The function to focus on is probe_hw_pci. This function calls "open_hw" which opens /dev/dri/card0 and return fd (9 in my case, irrelevant). Then comes the moment when probe_hw_pci calls: id = drmGetBusid(fd); devid = ms_DRICreatePCIBusID(pdev); The first one returns NULL, the second one returns "pci:0000:03:00.0". As the "id" is NULL (empty string) probe_hw_pci returns false and the rest fails. I can't say why drmGetBusid returns NULL. My drm is from yesterday's git and DRM_IOCTL_GET_UNIQUE isn't something bleeding edge AFAIK. Hacking probe_hw_pci to return TRUE allows me start X with modesetting. -- Rafał _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
