Hi, I encountered a possible bug with the hyperv_fb module. After verifying that the bug is not caused by Ubuntu kernel patches, I have been guided to report the bug here. I hope this information can help to solve the problem. I am running Xubuntu 13.10 in a Hyper-V machine on Windows 8 Pro. According to the kernel module description the kernel driver should allow for FullHD resoltuion and should eliminate the double mouse courser. Here neither of that happens though, screen resolution is limited to 1152x864 like it was with 13.04 before the framebuffer driver was added and I still have double mouse coursers. lsmod verifies hyperv_fb module to be loaded. So there must be something which stops the enhancements from working correctly. I am running the current 3.11 vanilla kernel, so the problem is not caused by any Ubuntu specific patches. Downstream bug report: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1218995 Below you find some technical information (collected according to the guide from https://wiki.ubuntu.com/Bugs/Upstream/kernel): jan@XubuntuVM-Jan-Desktop:~$ cat /proc/version Linux version 3.11.0-031100-generic (apw@gomeisa) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #201309021735 SMP Mon Sep 2 21:36:21 UTC 2013 jan@XubuntuVM-Jan-Desktop:~$ lsb_release -rd Description: Ubuntu Saucy Salamander (development branch) Release: 13.10 jan@XubuntuVM-Jan-Desktop:/usr/src/linux-headers-3.11.0-031100/scripts$ sh ver_linux If some fields are empty or look unusual you may have an old version. Compare to the current minimal requirements in Documentation/Changes. Linux XubuntuVM-Jan-Desktop 3.11.0-031100-generic #201309021735 SMP Mon Sep 2 21:36:21 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux Gnu C 4.8 Gnu make 3.81 binutils 2.23.52.20130828 util-linux 2.20.1 mount support module-init-tools 9 e2fsprogs 1.42.8 pcmciautils 018 PPP 2.4.5 Linux C Library 2.17 Dynamic linker (ldd) 2.17 Procps 3.3.3 Net-tools 1.60 Kbd 1.15.5 Sh-utils 8.20 wireless-tools 30 Modules Loaded rfcomm bnep bluetooth parport_pc ppdev psmouse hid_generic joydev hid_hyperv serio_raw lp microcode hid hyperv_fb hv_balloon parport i2c_piix4 mac_hid hv_netvsc hv_utils hv_storvsc hv_vmbus floppy jan@XubuntuVM-Jan-Desktop:~$ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 30 model name : Intel(R) Core(TM) i5 CPU 750 @ 2.67GHz stepping : 5 microcode : 0xffffffff cpu MHz : 2659.988 cache size : 8192 KB fpu : yes fpu_exception : yes cpuid level : 11 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss syscall nx lm constant_tsc rep_good nopl pni ssse3 cx16 sse4_1 sse4_2 popcnt hypervisor lahf_lm bogomips : 5319.97 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: jan@XubuntuVM-Jan-Desktop:~$ cat /proc/modules rfcomm 74589 4 - Live 0x0000000000000000 bnep 23966 2 - Live 0x0000000000000000 bluetooth 391564 10 rfcomm,bnep, Live 0x0000000000000000 parport_pc 32866 0 - Live 0x0000000000000000 ppdev 17711 0 - Live 0x0000000000000000 psmouse 104064 0 - Live 0x0000000000000000 hid_generic 12548 0 - Live 0x0000000000000000 joydev 17613 0 - Live 0x0000000000000000 hid_hyperv 13207 0 - Live 0x0000000000000000 serio_raw 13413 0 - Live 0x0000000000000000 lp 17799 0 - Live 0x0000000000000000 microcode 23650 0 - Live 0x0000000000000000 hid 105557 2 hid_generic,hid_hyperv, Live 0x0000000000000000 hyperv_fb 17514 1 - Live 0x0000000000000000 hv_balloon 21788 0 [permanent], Live 0x0000000000000000 parport 42466 3 parport_pc,ppdev,lp, Live 0x0000000000000000 i2c_piix4 22299 0 - Live 0x0000000000000000 mac_hid 13253 0 - Live 0x0000000000000000 hv_netvsc 31648 0 - Live 0x0000000000000000 hv_utils 18348 0 - Live 0x0000000000000000 hv_storvsc 22328 2 - Live 0x0000000000000000 hv_vmbus 48391 6 hid_hyperv,hyperv_fb,hv_balloon,hv_netvsc,hv_utils,hv_storvsc, Live 0x0000000000000000 floppy 70206 0 - Live 0x0000000000000000 jan@XubuntuVM-Jan-Desktop:~$ cat /proc/ioports 0000-0cf7 : PCI Bus 0000:00 0000-001f : dma1 0020-0021 : pic1 0022-0022 : ACPI PM2_CNT_BLK 0040-0043 : timer0 0050-0053 : timer1 0060-0060 : keyboard 0064-0064 : keyboard 0070-0071 : rtc0 0080-008f : dma page reg 00a0-00a1 : pic2 00c0-00df : dma2 00f0-00ff : fpu 0160-016f : pnp 00:09 0170-0177 : 0000:00:07.1 0170-0177 : ata_piix 01e0-01ef : pnp 00:09 01f0-01f7 : 0000:00:07.1 01f0-01f7 : ata_piix 0278-027f : pnp 00:09 02f8-02ff : serial 0370-0371 : pnp 00:0a 0376-0376 : 0000:00:07.1 0376-0376 : ata_piix 0378-037f : pnp 00:09 03f2-03f2 : floppy 03f4-03f5 : floppy 03f6-03f6 : 0000:00:07.1 03f6-03f6 : ata_piix 03f7-03f7 : floppy 03f8-03ff : serial 0400-043f : 0000:00:07.3 0400-043f : pnp 00:0a 0400-0403 : ACPI PM1a_EVT_BLK 0404-0405 : ACPI PM1a_CNT_BLK 0408-040b : ACPI PM_TMR 040c-040f : ACPI GPE0_BLK 0440-044f : pnp 00:0a 04d0-04d1 : pnp 00:09 0678-067f : pnp 00:09 0778-077f : pnp 00:09 0cf8-0cff : PCI conf1 0d00-ffff : PCI Bus 0000:00 ffa0-ffaf : 0000:00:07.1 ffa0-ffaf : ata_piix jan@XubuntuVM-Jan-Desktop:~$ cat /proc/iomem 00000000-00000fff : reserved 00001000-0009fbff : System RAM 0009fc00-0009ffff : reserved 000a0000-000bffff : PCI Bus 0000:00 000c0000-000c7fff : Video ROM 000e0000-000fffff : reserved 000f0000-000fffff : System ROM 00100000-7ffeffff : System RAM 01000000-0173a293 : Kernel code 0173a294-01d0e93f : Kernel data 01e70000-01fe2fff : Kernel bss 7fff0000-7fffefff : ACPI Tables 7ffff000-7fffffff : ACPI Non-volatile Storage 80000000-87ffffff : System RAM f8000000-fffbffff : PCI Bus 0000:00 f8000000-fbffffff : 0000:00:08.0 fb800000-fbffffff : hyperv_fb fec00000-fec003ff : IOAPIC 0 fee00000-fee00fff : Local APIC fee00000-fee00fff : pnp 00:0a fffc0000-ffffffff : pnp 00:0b fe0000000-fffefffff : PCI Bus 0000:00 jan@XubuntuVM-Jan-Desktop:~$ sudo lspci -vvv [sudo] password for jan: 00:00.0 Host bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (AGP disabled) (rev 03) Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 00:07.0 ISA bridge: Intel Corporation 82371AB/EB/MB PIIX4 ISA (rev 01) Subsystem: Microsoft Corporation Device 0000 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 00:07.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01) (prog-if 80 [Master]) Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Region 0: [virtual] Memory at 000001f0 (32-bit, non-prefetchable) [size=8] Region 1: [virtual] Memory at 000003f0 (type 3, non-prefetchable) [size=1] Region 2: [virtual] Memory at 00000170 (32-bit, non-prefetchable) [size=8] Region 3: [virtual] Memory at 00000370 (type 3, non-prefetchable) [size=1] Region 4: I/O ports at ffa0 [size=16] Kernel driver in use: ata_piix 00:07.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 02) Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Interrupt: pin A routed to IRQ 9 00:08.0 VGA compatible controller: Microsoft Corporation Hyper-V virtual VGA (prog-if 00 [VGA controller]) Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV+ VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 11 Region 0: Memory at f8000000 (32-bit, non-prefetchable) [size=64M] Expansion ROM at <unassigned> [disabled] jan@XubuntuVM-Jan-Desktop:~$ cat /proc/scsi/scsi Attached devices: Host: scsi1 Channel: 00 Id: 00 Lun: 00 Vendor: Msft Model: Virtual CD/ROM Rev: 1.0 Type: CD-ROM ANSI SCSI revision: 05 Host: scsi2 Channel: 00 Id: 00 Lun: 00 Vendor: Msft Model: Virtual Disk Rev: 1.0 Type: Direct-Access ANSI SCSI revision: 04 jan@XubuntuVM-Jan-Desktop:~$ ls /proc/ 1 110 1197 124 13 14 15 170 242 267 40 520 69 79 898 99 interrupts mtrr uptime 10 1101 1199 1240 130 140 150 171 243 268 400 53 7 8 9 998 iomem net version 100 1104 12 1242 1300 141 1518 172 244 269 406 54 70 80 90 acpi ioports pagetypeinfo vmallocinfo 101 111 120 1247 1305 142 152 174 246 27 41 55 703 81 907 buddyinfo irq partitions vmstat 102 1118 1202 1248 131 143 1522 18 247 28 42 56 71 82 91 bus kallsyms sched_debug zoneinfo 1022 112 1206 125 1310 1437 1523 1826 248 29 43 57 72 820 917 cgroups kcore schedstat 103 113 121 1258 132 144 153 19 249 3 433 58 73 822 918 cmdline key-users scsi 1031 114 1212 126 1325 1441 154 194 25 30 44 59 735 83 92 consoles kmsg self 1038 115 1216 1269 133 1444 155 195 250 31 45 6 736 833 927 cpuinfo kpagecount slabinfo 104 116 1218 127 1331 145 156 2 251 32 46 60 74 835 93 crypto kpageflags softirqs 105 1169 122 1274 1334 1453 157 20 252 33 47 61 75 84 94 devices latency_stats stat 1053 117 1220 128 134 1459 1571 2073 253 335 48 62 76 841 95 diskstats loadavg swaps 1055 1171 1222 1282 1344 146 1575 21 254 34 49 63 77 846 96 dma locks sys 106 1175 1224 1284 135 1464 158 2104 255 35 5 64 779 85 97 driver mdstat sysrq-trigger 107 118 1226 1287 136 147 16 22 256 36 50 65 78 86 979 execdomains meminfo sysvipc 108 1188 123 1289 137 1473 1644 23 257 37 501 66 787 87 98 fb misc timer_list 109 1189 1235 129 138 148 169 24 26 38 51 67 788 88 981 filesystems modules timer_stats 11 119 1236 1297 139 149 17 240 266 39 52 68 789 89 989 fs mounts tty -- Best regards Jan Henke
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