triage: mouse capture issue under Ubuntu 24.04

[sslaia]

Expected behavior

I can move mouse pointer every where in the VM window and click.

Actual behavior

Mouse can only move inside certain area of the screen. My monitor has 2560x1440 resolution. When I try to move the mouse inside the VM, it can only move in the area of 2048x1152 from the top left of the screen. In order to move to the other part I have to bring the mouse pointer outside the VM window and click on the other restricted area.

Of course this issue is not present if I align the VM to the top left of the screen and cover exactly 2048x1152.

Steps to reproduce the behavior

1. Start a vm as usual
2. Move the mouse pointer inside the VM

Additional context

This behaviour only happens in Ubuntu 24.04. It doesn't appear in Ubuntu 22.04.

Quickemu output

Run quickemu or quickemu and include the output of the failure below:

Quickemu output

Quickemu 4.9.4 using /usr/bin/qemu-system-x86_64 v8.2.2
- Host:     Ubuntu 24.04 LTS running Linux 6.8 (n5480)
- CPU:      Intel(R) Core(TM) i7-8565U CPU @ 1.80GHz
- CPU VM:   1 Socket(s), 2 Core(s), 2 Thread(s), 8G RAM
- BOOT:     EFI (Linux), OVMF (/usr/share/OVMF/OVMF_CODE_4M.fd), SecureBoot (off).
- Disk:     /home/user/VMs/KVM/varia/varia.qcow2 (16G)
- Display:  SDL, virtio-vga-gl, GL (on), VirGL (on)
- Sound:    intel-hda
- ssh:      On host:  ssh user@localhost -p 22220
- WebDAV:   On guest: dav://localhost:9843/
- 9P:       On guest: sudo mount -t 9p -o trans=virtio,version=9p2000.L,msize=104857600 Public-user ~/Public
- Network:  User (virtio-net)
- Monitor:  On host:  nc -U "/home/user/VMs/KVM/varia/varia-monitor.socket"
           or     :  socat -,echo=0,icanon=0 unix-connect:/home/user/VMs/KVM/varia/varia-monitor.socket
- Serial:   On host:  nc -U "/home/user/VMs/KVM/varia/varia-serial.socket"
           or     :  socat -,echo=0,icanon=0 unix-connect:/home/user/VMs/KVM/varia/varia-serial.socket
- Process:  Starting varia.conf as varia (21124)  

System Information

Run quickreport and include the output here; if you can't run quickreport,
please provide the output of the following:

clear && \
echo -e "Ver:\t$(quickemu --version)" && \
echo -e "Distro:\t$(grep PRETTY_NAME /etc/os-release | cut -d'"' -f2)" && \
echo -e "Kernel:\t$(uname -s -r -m)" && \
echo -e "Memory:\t$(free --si -h | awk '/Mem:/{print $2}')" && \
lspci | grep -i vga | cut -d':' -f3 && echo && \
curl --version && echo && \
qemu-system-"$(uname -m)" -version | head -1 && \
qemu-system-"$(uname -m)" -cpu help && echo && \
lscpu | tee quickreport.txt

Quickreport output

----------------------------------
      Quickemu 4.9.4
----------------------------------
Distro:	Ubuntu 24.04 LTS
Kernel:	Linux 6.8.0-31-generic x86_64
Memory:	33G
GPU:
- Intel Corporation WhiskeyLake-U GT2 [UHD Graphics 620]
----------------------------------
          curl 8.5.0
----------------------------------
Libraries: libcurl/8.5.0 OpenSSL/3.0.13 zlib/1.3 brotli/1.1.0 zstd/1.5.5 libidn2/2.3.7 libpsl/0.21.2 (+libidn2/2.3.7) libssh/0.10.6/openssl/zlib nghttp2/1.59.0 librtmp/2.3 OpenLDAP/2.6.7
Protocols: dict file ftp ftps gopher gophers http https imap imaps ldap ldaps mqtt pop3 pop3s rtmp rtsp scp sftp smb smbs smtp smtps telnet tftp
Features:  alt-svc AsynchDNS brotli GSS-API HSTS HTTP2 HTTPS-proxy IDN IPv6 Kerberos Largefile libz NTLM PSL SPNEGO SSL threadsafe TLS-SRP UnixSockets zstd
----------------------------------
          QEMU 8.2.2
----------------------------------
Available CPUs:
x86 486                   (alias configured by machine type)
x86 486-v1                
x86 Broadwell             (alias configured by machine type)
x86 Broadwell-IBRS        (alias of Broadwell-v3)
x86 Broadwell-noTSX       (alias of Broadwell-v2)
x86 Broadwell-noTSX-IBRS  (alias of Broadwell-v4)
x86 Broadwell-v1          Intel Core Processor (Broadwell)
x86 Broadwell-v2          Intel Core Processor (Broadwell, no TSX)
x86 Broadwell-v3          Intel Core Processor (Broadwell, IBRS)
x86 Broadwell-v4          Intel Core Processor (Broadwell, no TSX, IBRS)
x86 Cascadelake-Server    (alias configured by machine type)
x86 Cascadelake-Server-noTSX  (alias of Cascadelake-Server-v3)
x86 Cascadelake-Server-v1  Intel Xeon Processor (Cascadelake)
x86 Cascadelake-Server-v2  Intel Xeon Processor (Cascadelake) [ARCH_CAPABILITIES]
x86 Cascadelake-Server-v3  Intel Xeon Processor (Cascadelake) [ARCH_CAPABILITIES, no TSX]
x86 Cascadelake-Server-v4  Intel Xeon Processor (Cascadelake) [ARCH_CAPABILITIES, no TSX]
x86 Cascadelake-Server-v5  Intel Xeon Processor (Cascadelake) [ARCH_CAPABILITIES, EPT switching, XSAVES, no TSX]
x86 Conroe                (alias configured by machine type)
x86 Conroe-v1             Intel Celeron_4x0 (Conroe/Merom Class Core 2)
x86 Cooperlake            (alias configured by machine type)
x86 Cooperlake-v1         Intel Xeon Processor (Cooperlake)
x86 Cooperlake-v2         Intel Xeon Processor (Cooperlake) [XSAVES]
x86 Denverton             (alias configured by machine type)
x86 Denverton-v1          Intel Atom Processor (Denverton)
x86 Denverton-v2          Intel Atom Processor (Denverton) [no MPX, no MONITOR]
x86 Denverton-v3          Intel Atom Processor (Denverton) [XSAVES, no MPX, no MONITOR]
x86 Dhyana                (alias configured by machine type)
x86 Dhyana-v1             Hygon Dhyana Processor
x86 Dhyana-v2             Hygon Dhyana Processor [XSAVES]
x86 EPYC                  (alias configured by machine type)
x86 EPYC-Genoa            (alias configured by machine type)
x86 EPYC-Genoa-v1         AMD EPYC-Genoa Processor
x86 EPYC-IBPB             (alias of EPYC-v2)
x86 EPYC-Milan            (alias configured by machine type)
x86 EPYC-Milan-v1         AMD EPYC-Milan Processor
x86 EPYC-Milan-v2         AMD EPYC-Milan-v2 Processor
x86 EPYC-Rome             (alias configured by machine type)
x86 EPYC-Rome-v1          AMD EPYC-Rome Processor
x86 EPYC-Rome-v2          AMD EPYC-Rome Processor
x86 EPYC-Rome-v3          AMD EPYC-Rome-v3 Processor
x86 EPYC-Rome-v4          AMD EPYC-Rome-v4 Processor (no XSAVES)
x86 EPYC-v1               AMD EPYC Processor
x86 EPYC-v2               AMD EPYC Processor (with IBPB)
x86 EPYC-v3               AMD EPYC Processor
x86 EPYC-v4               AMD EPYC-v4 Processor
x86 GraniteRapids         (alias configured by machine type)
x86 GraniteRapids-v1      Intel Xeon Processor (GraniteRapids)
x86 Haswell               (alias configured by machine type)
x86 Haswell-IBRS          (alias of Haswell-v3)
x86 Haswell-noTSX         (alias of Haswell-v2)
x86 Haswell-noTSX-IBRS    (alias of Haswell-v4)
x86 Haswell-v1            Intel Core Processor (Haswell)
x86 Haswell-v2            Intel Core Processor (Haswell, no TSX)
x86 Haswell-v3            Intel Core Processor (Haswell, IBRS)
x86 Haswell-v4            Intel Core Processor (Haswell, no TSX, IBRS)
x86 Icelake-Server        (alias configured by machine type)
x86 Icelake-Server-noTSX  (alias of Icelake-Server-v2)
x86 Icelake-Server-v1     Intel Xeon Processor (Icelake)
x86 Icelake-Server-v2     Intel Xeon Processor (Icelake) [no TSX]
x86 Icelake-Server-v3     Intel Xeon Processor (Icelake)
x86 Icelake-Server-v4     Intel Xeon Processor (Icelake)
x86 Icelake-Server-v5     Intel Xeon Processor (Icelake) [XSAVES]
x86 Icelake-Server-v6     Intel Xeon Processor (Icelake) [5-level EPT]
x86 IvyBridge             (alias configured by machine type)
x86 IvyBridge-IBRS        (alias of IvyBridge-v2)
x86 IvyBridge-v1          Intel Xeon E3-12xx v2 (Ivy Bridge)
x86 IvyBridge-v2          Intel Xeon E3-12xx v2 (Ivy Bridge, IBRS)
x86 KnightsMill           (alias configured by machine type)
x86 KnightsMill-v1        Intel Xeon Phi Processor (Knights Mill)
x86 Nehalem               (alias configured by machine type)
x86 Nehalem-IBRS          (alias of Nehalem-v2)
x86 Nehalem-v1            Intel Core i7 9xx (Nehalem Class Core i7)
x86 Nehalem-v2            Intel Core i7 9xx (Nehalem Core i7, IBRS update)
x86 Opteron_G1            (alias configured by machine type)
x86 Opteron_G1-v1         AMD Opteron 240 (Gen 1 Class Opteron)
x86 Opteron_G2            (alias configured by machine type)
x86 Opteron_G2-v1         AMD Opteron 22xx (Gen 2 Class Opteron)
x86 Opteron_G3            (alias configured by machine type)
x86 Opteron_G3-v1         AMD Opteron 23xx (Gen 3 Class Opteron)
x86 Opteron_G4            (alias configured by machine type)
x86 Opteron_G4-v1         AMD Opteron 62xx class CPU
x86 Opteron_G5            (alias configured by machine type)
x86 Opteron_G5-v1         AMD Opteron 63xx class CPU
x86 Penryn                (alias configured by machine type)
x86 Penryn-v1             Intel Core 2 Duo P9xxx (Penryn Class Core 2)
x86 SandyBridge           (alias configured by machine type)
x86 SandyBridge-IBRS      (alias of SandyBridge-v2)
x86 SandyBridge-v1        Intel Xeon E312xx (Sandy Bridge)
x86 SandyBridge-v2        Intel Xeon E312xx (Sandy Bridge, IBRS update)
x86 SapphireRapids        (alias configured by machine type)
x86 SapphireRapids-v1     Intel Xeon Processor (SapphireRapids)
x86 SapphireRapids-v2     Intel Xeon Processor (SapphireRapids)
x86 Skylake-Client        (alias configured by machine type)
x86 Skylake-Client-IBRS   (alias of Skylake-Client-v2)
x86 Skylake-Client-noTSX-IBRS  (alias of Skylake-Client-v3)
x86 Skylake-Client-v1     Intel Core Processor (Skylake)
x86 Skylake-Client-v2     Intel Core Processor (Skylake, IBRS)
x86 Skylake-Client-v3     Intel Core Processor (Skylake, IBRS, no TSX)
x86 Skylake-Client-v4     Intel Core Processor (Skylake, IBRS, no TSX) [IBRS, XSAVES, no TSX]
x86 Skylake-Server        (alias configured by machine type)
x86 Skylake-Server-IBRS   (alias of Skylake-Server-v2)
x86 Skylake-Server-noTSX-IBRS  (alias of Skylake-Server-v3)
x86 Skylake-Server-v1     Intel Xeon Processor (Skylake)
x86 Skylake-Server-v2     Intel Xeon Processor (Skylake, IBRS)
x86 Skylake-Server-v3     Intel Xeon Processor (Skylake, IBRS, no TSX)
x86 Skylake-Server-v4     Intel Xeon Processor (Skylake, IBRS, no TSX)
x86 Skylake-Server-v5     Intel Xeon Processor (Skylake, IBRS, no TSX) [IBRS, XSAVES, EPT switching, no TSX]
x86 Snowridge             (alias configured by machine type)
x86 Snowridge-v1          Intel Atom Processor (SnowRidge)
x86 Snowridge-v2          Intel Atom Processor (Snowridge, no MPX)
x86 Snowridge-v3          Intel Atom Processor (Snowridge, no MPX) [XSAVES, no MPX]
x86 Snowridge-v4          Intel Atom Processor (Snowridge, no MPX) [no split lock detect, no core-capability]
x86 Westmere              (alias configured by machine type)
x86 Westmere-IBRS         (alias of Westmere-v2)
x86 Westmere-v1           Westmere E56xx/L56xx/X56xx (Nehalem-C)
x86 Westmere-v2           Westmere E56xx/L56xx/X56xx (IBRS update)
x86 athlon                (alias configured by machine type)
x86 athlon-v1             QEMU Virtual CPU version 2.5+
x86 core2duo              (alias configured by machine type)
x86 core2duo-v1           Intel(R) Core(TM)2 Duo CPU     T7700  @ 2.40GHz
x86 coreduo               (alias configured by machine type)
x86 coreduo-v1            Genuine Intel(R) CPU           T2600  @ 2.16GHz
x86 kvm32                 (alias configured by machine type)
x86 kvm32-v1              Common 32-bit KVM processor
x86 kvm64                 (alias configured by machine type)
x86 kvm64-v1              Common KVM processor
x86 n270                  (alias configured by machine type)
x86 n270-v1               Intel(R) Atom(TM) CPU N270   @ 1.60GHz
x86 pentium               (alias configured by machine type)
x86 pentium-v1            
x86 pentium2              (alias configured by machine type)
x86 pentium2-v1           
x86 pentium3              (alias configured by machine type)
x86 pentium3-v1           
x86 phenom                (alias configured by machine type)
x86 phenom-v1             AMD Phenom(tm) 9550 Quad-Core Processor
x86 qemu32                (alias configured by machine type)
x86 qemu32-v1             QEMU Virtual CPU version 2.5+
x86 qemu64                (alias configured by machine type)
x86 qemu64-v1             QEMU Virtual CPU version 2.5+
x86 base                  base CPU model type with no features enabled
x86 host                  processor with all supported host features 
x86 max                   Enables all features supported by the accelerator in the current host

Recognized CPUID flags:
3dnow 3dnowext 3dnowprefetch abm ace2 ace2-en acpi adx aes amd-no-ssb
amd-psfd amd-ssbd amd-stibp amx-bf16 amx-complex amx-fp16 amx-int8
amx-tile apic arat arch-capabilities arch-lbr auto-ibrs avic avx avx-ifma
avx-ne-convert avx-vnni avx-vnni-int8 avx2 avx512-4fmaps avx512-4vnniw
avx512-bf16 avx512-fp16 avx512-vp2intersect avx512-vpopcntdq avx512bitalg
avx512bw avx512cd avx512dq avx512er avx512f avx512ifma avx512pf
avx512vbmi avx512vbmi2 avx512vl avx512vnni bmi1 bmi2 bus-lock-detect cid
cldemote clflush clflushopt clwb clzero cmov cmp-legacy cmpccxadd
core-capability cr8legacy cx16 cx8 dca de decodeassists ds ds-cpl dtes64
erms est extapic f16c fb-clear fbsdp-no flush-l1d flushbyasid fma fma4
fpu fsgsbase fsrc fsrm fsrs full-width-write fxsr fxsr-opt fzrm gds-no
gfni hle ht hypervisor ia64 ibpb ibrs ibrs-all ibs intel-pt intel-pt-lip
invpcid invtsc kvm-asyncpf kvm-asyncpf-int kvm-hint-dedicated kvm-mmu
kvm-msi-ext-dest-id kvm-nopiodelay kvm-poll-control kvm-pv-eoi kvm-pv-ipi
kvm-pv-sched-yield kvm-pv-tlb-flush kvm-pv-unhalt kvm-steal-time kvmclock
kvmclock kvmclock-stable-bit la57 lahf-lm lbrv lfence-always-serializing
lm lwp mca mcdt-no mce md-clear mds-no misalignsse mmx mmxext monitor
movbe movdir64b movdiri mpx msr mtrr no-nested-data-bp nodeid-msr npt
nrip-save null-sel-clr-base nx osvw pae pat pause-filter pbe pbrsb-no
pcid pclmulqdq pcommit pdcm pdpe1gb perfctr-core perfctr-nb pfthreshold
pge phe phe-en pks pku pmm pmm-en pn pni popcnt prefetchiti
pschange-mc-no psdp-no pse pse36 rdctl-no rdpid rdrand rdseed rdtscp rsba
rtm sbdr-ssdp-no sep serialize sgx sgx-aex-notify sgx-debug sgx-edeccssa
sgx-exinfo sgx-kss sgx-mode64 sgx-provisionkey sgx-tokenkey sgx1 sgx2
sgxlc sha-ni skinit skip-l1dfl-vmentry smap smep smx spec-ctrl
split-lock-detect ss ssb-no ssbd sse sse2 sse4.1 sse4.2 sse4a ssse3 stibp
stibp-always-on svm svm-lock svme-addr-chk syscall taa-no tbm tce tm tm2
topoext tsc tsc-adjust tsc-deadline tsc-scale tsx-ctrl tsx-ldtrk umip
v-vmsave-vmload vaes vgif virt-ssbd vmcb-clean vme vmx vmx-activity-hlt
vmx-activity-shutdown vmx-activity-wait-sipi vmx-any-errcode
vmx-apicv-register vmx-apicv-vid vmx-apicv-x2apic vmx-apicv-xapic
vmx-cr3-load-noexit vmx-cr3-store-noexit vmx-cr8-load-exit
vmx-cr8-store-exit vmx-desc-exit vmx-enable-user-wait-pause
vmx-encls-exit vmx-entry-ia32e-mode vmx-entry-load-bndcfgs
vmx-entry-load-efer vmx-entry-load-pat vmx-entry-load-perf-global-ctrl
vmx-entry-load-pkrs vmx-entry-load-rtit-ctl vmx-entry-noload-debugctl
vmx-ept vmx-ept-1gb vmx-ept-2mb vmx-ept-advanced-exitinfo
vmx-ept-execonly vmx-eptad vmx-eptp-switching vmx-exit-ack-intr
vmx-exit-clear-bndcfgs vmx-exit-clear-rtit-ctl vmx-exit-load-efer
vmx-exit-load-pat vmx-exit-load-perf-global-ctrl vmx-exit-load-pkrs
vmx-exit-nosave-debugctl vmx-exit-save-efer vmx-exit-save-pat
vmx-exit-save-preemption-timer vmx-flexpriority vmx-hlt-exit vmx-ins-outs
vmx-intr-exit vmx-invept vmx-invept-all-context vmx-invept-single-context
vmx-invept-single-context vmx-invept-single-context-noglobals
vmx-invlpg-exit vmx-invpcid-exit vmx-invvpid vmx-invvpid-all-context
vmx-invvpid-single-addr vmx-io-bitmap vmx-io-exit vmx-monitor-exit
vmx-movdr-exit vmx-msr-bitmap vmx-mtf vmx-mwait-exit vmx-nmi-exit
vmx-page-walk-4 vmx-page-walk-5 vmx-pause-exit vmx-ple vmx-pml
vmx-posted-intr vmx-preemption-timer vmx-rdpmc-exit vmx-rdrand-exit
vmx-rdseed-exit vmx-rdtsc-exit vmx-rdtscp-exit vmx-secondary-ctls
vmx-shadow-vmcs vmx-store-lma vmx-true-ctls vmx-tsc-offset
vmx-tsc-scaling vmx-unrestricted-guest vmx-vintr-pending vmx-vmfunc
vmx-vmwrite-vmexit-fields vmx-vnmi vmx-vnmi-pending vmx-vpid
vmx-wbinvd-exit vmx-xsaves vmx-zero-len-inject vnmi vpclmulqdq waitpkg
wbnoinvd wdt x2apic xcrypt xcrypt-en xfd xgetbv1 xop xsave xsavec
xsaveerptr xsaveopt xsaves xstore xstore-en xtpr

----------------------------------
             CPU
----------------------------------
Architecture:                         x86_64
CPU op-mode(s):                       32-bit, 64-bit
Address sizes:                        39 bits physical, 48 bits virtual
Byte Order:                           Little Endian
CPU(s):                               8
On-line CPU(s) list:                  0-7
Vendor ID:                            GenuineIntel
Model name:                           Intel(R) Core(TM) i7-8565U CPU @ 1.80GHz
CPU family:                           6
Model:                                142
Thread(s) per core:                   2
Core(s) per socket:                   4
Socket(s):                            1
Stepping:                             11
CPU(s) scaling MHz:                   88%
CPU max MHz:                          4600.0000
CPU min MHz:                          400.0000
BogoMIPS:                             3999.93
Flags:                                fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb ssbd ibrs ibpb stibp tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust sgx bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp vnmi md_clear flush_l1d arch_capabilities
Virtualization:                       VT-x
L1d cache:                            128 KiB (4 instances)
L1i cache:                            128 KiB (4 instances)
L2 cache:                             1 MiB (4 instances)
L3 cache:                             8 MiB (1 instance)
NUMA node(s):                         1
NUMA node0 CPU(s):                    0-7
Vulnerability Gather data sampling:   Mitigation; Microcode
Vulnerability Itlb multihit:          KVM: Mitigation: Split huge pages
Vulnerability L1tf:                   Not affected
Vulnerability Mds:                    Mitigation; Clear CPU buffers; SMT vulnerable
Vulnerability Meltdown:               Not affected
Vulnerability Mmio stale data:        Mitigation; Clear CPU buffers; SMT vulnerable
Vulnerability Reg file data sampling: Not affected
Vulnerability Retbleed:               Mitigation; IBRS
Vulnerability Spec rstack overflow:   Not affected
Vulnerability Spec store bypass:      Mitigation; Speculative Store Bypass disabled via prctl
Vulnerability Spectre v1:             Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Vulnerability Spectre v2:             Mitigation; IBRS; IBPB conditional; STIBP conditional; RSB filling; PBRSB-eIBRS Not affected; BHI Not affected
Vulnerability Srbds:                  Mitigation; Microcode
Vulnerability Tsx async abort:        Not affected

[flexiondotorg]

What operating system is the guest VM running?

Please can you try starting the VM using the following and report back:

quickemu --vm varia.con --display spice

[sslaia]

The guest OS is Ubuntu 22.04.

The mouse capture issue doesn't occur when the vm is started with display spice option.

No issue too in KDE Neon (except the ghost mouse pointer, which only occurs in KDE Neon).