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And guest response to mouse and keyboard is very slow.
If I change vga="qxl" to "vga=stdvga" merely, everything is fiine.
Although I use spice, but vnc has the same problem. so it is not spice or vnc.
Versions:
Dom0: Ubuntu 20.04 LTS
DomU: Windows 10 2019 LTS
DomU qxl driver:
Xen Ubunt package: 4.11.3+24-g14b62ab3e5-1ubuntu2
--> cat test-win10.cfg
type = "hvm"
name = "win10"
viridian = 1
memory = 8192
maxmem = 8192
vcpus = 4
vif = [ 'mac=00:16:3e:28:6d:10,bridge=virbr5' ]
disk = [ 'tap:qcow2:/home/Data/VM/QEMU/Win10.qcow2,xvda,rw',
'tap:qcow2:/home/Data/VM/QEMU/Programs.qcow2,xvdb,rw' ]
hdtype = "ahci"
boot = "c"
vga = "qxl"
vnc = 0
spice = 1
spicehost = "127.0.0.1"
spiceport = "236"
spicedisable_ticketing = 1
spice_image_compression = "off"
spicevdagent = 1
spice_clipboard_sharing = 1
spiceusbredirection = 2
soundhw="hda"
`--# cat /var/log/xen/qemu-dm-win10.log
Locked DMA mapping while invalidating mapcache! 0000000000000eff -> 0x7f83c0146300 is present
Locked DMA mapping while invalidating mapcache! 0000000000000eff -> 0x7f83c0146400 is present
Locked DMA mapping while invalidating mapcache! 0000000000000eff -> 0x7f83c0146d00 is present
Locked DMA mapping while invalidating mapcache! 0000000000000eff -> 0x7f83c0146800 is present
qemu-system-i386: terminating on signal 1 from pid 29313 (/usr/lib/xen-4.11/bin/xl)
`--# xl info
host : ubuntu
release : 5.4.0-72-generic
version : #80-Ubuntu SMP Mon Apr 12 17:35:00 UTC 2021
machine : x86_64
nr_cpus : 4
max_cpu_id : 7
nr_nodes : 1
cores_per_socket : 2
threads_per_core : 2
cpu_mhz : 2808.255
hw_caps : bfebfbff:77faf3ff:2c100800:00000121:0000000f:009c6fbf:00000000:00000100
virt_caps : hvm hvm_directio
total_memory : 20335
free_memory : 15963
sharing_freed_memory : 0
sharing_used_memory : 0
outstanding_claims : 0
free_cpus : 0
xen_major : 4
xen_minor : 11
xen_extra : .4-pre
xen_version : 4.11.4-pre
xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler : credit
xen_pagesize : 4096
platform_params : virt_start=0xffff800000000000
xen_changeset :
xen_commandline : placeholder dom0_mem=4096M,max:4096M no-real-mode edd=off
cc_compiler : gcc (Ubuntu 9.2.1-31ubuntu3) 9.2.1 20200306
cc_compile_by : ubuntu-devel-di
cc_compile_domain : lists.ubuntu.com
cc_compile_date : Tue Mar 10 09:04:06 UTC 2020
build_id : 70edf50fce444a706eb5c69735c35c1838e4eaee
xend_config_format : 4
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