Hi Gerd, Here is what I got: [ 813.137939] [drm:drm_pci_init] [ 813.142780] [drm:drm_get_pci_dev] [ 813.156986] [drm:drm_minor_register] [ 813.212679] [drm:drm_minor_register] new minor registered 64 [ 813.213341] [drm:drm_minor_register] [ 813.215081] [drm:drm_minor_register] [ 813.235736] [drm:drm_minor_register] new minor registered 0 [ 813.252701] [drm] Found bochs VGA, ID 0xb0c0. [ 813.254993] [drm] Framebuffer size 8192 kB @ 0xfe000000, ioports @ 0x1ce. [ 813.271384] [TTM] Zone kernel: Available graphics memory: 513150 kiB [ 813.272036] [TTM] Initializing pool allocator [ 813.279538] [TTM] Initializing DMA pool allocator [ 813.299800] [drm:drm_sysfs_connector_add] adding "Virtual-1" to sysfs [ 813.303164] [drm:drm_sysfs_hotplug_event] generating hotplug event [ 813.313079] [drm] Initialized bochs-drm 1.0.0 20130925 for 0000:00:02.0 on minor 0
If I remove the bochs-drm.ko from its place, then boot the virtual machine, after it runs, copy the bochs-drm.ko to its original place, depmod the module, and modprobe bochs-drm, it give the messages above. Seems like the bochs driver works, but if I reboot with the bochs-drm.ko, it goes to dark, and the messages related to bochs is same as above. I guess the problem is because that I take no care of bochs_hw_setbase after remove the bochs_crtc_mode_set_base, but I am not sure. I will be appreciate if you can review the patch a bit and tell me where the problem might be, and I will dig more into that. I really can't get any clue. If my question is stupid, forgive me, I will try to catch up :) Best Regards, Zhao On Wed, Jun 10, 2015 at 8:20 PM, Gerd Hoffmann <kraxel at redhat.com> wrote: > On Mi, 2015-06-10 at 19:39 +0800, John Hunter wrote: > > Hi Gerd, > > I have tried what you told me. > > 1. Turn off fbdev support: > > static bool enable_fbdev = false; > > Good. > > > 2. configure a serial console: > > - add something like "console=ttyS0, 9600n8" to the grub menuentry > > Good. > > You can use 115200 as line speed to speedup the console a bit. > > > - add a start parameter to qemu when start the virtual machine > > "-serial pty" > > '-serial stdio' might be more convenient. > > > saned disabled; edit /etc/default/saned > > [ ok ] Starting network connection manager: NetworkManager. > > [ ok ] Starting Common Unix Printing System: cupsd. > > > > > > The serial console messages also stop here, no other output. > > Which guest is this? On modern linux distros (anything systemd-based) > you should automatically get a login prompt on the serial line in case > it is configured as console. Older systems need manual configuration > for that. Could also be the system simply hangs here. > > Try adding "ignore_loglevel" and "drm.debug=0x07" to the kernel command > line. > > HTH, > Gerd > > > > -- Best regards Junwang Zhao Microprocessor Research and Develop Center Department of Computer Science &Technology Peking University Beijing, 100871, PRC -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20150611/5e9db4f1/attachment.html>
