Tried this with mac99 machine and lubuntu 16.04 ppc.

After upgrading r128 driver to -hwe part to get past this bug
https://bugs.freedesktop.org/show_bug.cgi?id=91622

and disabling accel I can see some image and cursor!

qemu command:

ppc64-softmmu/qemu-system-ppc64 -M mac99 -device ati-vga \
-cdrom /mnt/sdb1/ISO/lubuntu-16.04-desktop-powerpc.iso -m 1G -boot d -cpu g4 -device usb-mouse -smp 1

model rv100 doesn't recognized by openfirmware, so no output from it.

Menus in wondows still at wrong place (not shown, even), but generally speaking some image is on screen.
[    0.000000] Using PowerMac machine description
[    0.000000] Total memory = 1024MB; using 2048kB for hash table (at cfe00000)
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Initializing cgroup subsys cpuacct
[    0.000000] Linux version 4.4.0-21-powerpc-smp (buildd@denneed04) (gcc version 5.3.1 20160413 (Ubuntu 5.3.1-14ubuntu2) ) #37-Ubuntu SMP Mon Apr 18 18:33:34 UTC 2016 (Ubuntu 4.4.0-21.37-powerpc-smp 4.4.6)
[    0.000000] Found initrd at 0xc1b00000:0xc30f9ad3
[    0.000000] Found UniNorth memory controller & host bridge @ 0xf8000000 revision: 0x07
[    0.000000] Mapped at 0xff7c0000
[    0.000000] Found a Keylargo mac-io controller, rev: 0, mapped at 0xff740000
[    0.000000] Processor NAP mode on idle enabled.
[    0.000000] PowerMac motherboard: PowerMac G4 AGP Graphics
[    0.000000] CPU maps initialized for 1 thread per core
[    0.000000]  (thread shift is 0)
[    0.000000] bootconsole [udbg0] enabled
[    0.000000] Found UniNorth PCI host bridge at 0x00000000f2000000. Firmware bus number: 0->0
[    0.000000] PCI host bridge /pci@f2000000 (primary) ranges:
[    0.000000]   IO 0x00000000f2000000..0x00000000f27fffff -> 0x0000000000000000
[    0.000000]  MEM 0x0000000080000000..0x000000008fffffff -> 0x0000000080000000 
[    0.000000] nvram: Checking bank 0...
[    0.000000] Invalid signature
[    0.000000] Invalid checksum
[    0.000000] nvram: gen0=0, gen1=0
[    0.000000] nvram: Active bank is: 0
[    0.000000] nvram: OF partition at 0xffffffff
[    0.000000] nvram: XP partition at 0xffffffff
[    0.000000] nvram: NR partition at 0xffffffff
[    0.000000] Top of RAM: 0x40000000, Total RAM: 0x40000000
[    0.000000] Memory hole size: 0MB
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x0000000000000000-0x000000002fffffff]
[    0.000000]   Normal   empty
[    0.000000]   HighMem  [mem 0x0000000030000000-0x000000003fffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x000000003fffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x000000003fffffff]
[    0.000000] On node 0 totalpages: 262144
[    0.000000] free_area_init_node: node 0, pgdat c0bb0920, node_mem_map ef6ee000
[    0.000000]   DMA zone: 1728 pages used for memmap
[    0.000000]   DMA zone: 0 pages reserved
[    0.000000]   DMA zone: 196608 pages, LIFO batch:31
[    0.000000]   HighMem zone: 65536 pages, LIFO batch:15
[    0.000000] PERCPU: Embedded 13 pages/cpu @ef6db000 s22188 r8192 d22868 u53248
[    0.000000] pcpu-alloc: s22188 r8192 d22868 u53248 alloc=13*4096
[    0.000000] pcpu-alloc: [0] 0 
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 260416
[    0.000000] Kernel command line: ro ramdisk_size=1048576 file=/cdrom/preseed/lubuntu.seed boot=casper quiet splash --- 
[    0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
[    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
[    0.000000] Sorting __ex_table...
[    0.000000] allocated 1048576 bytes of page_ext
[    0.000000] Memory: 932896K/1048576K available (8204K kernel code, 564K rwdata, 2784K rodata, 536K init, 1743K bss, 115680K reserved, 0K cma-reserved, 262144K highmem)
[    0.000000] Kernel virtual memory layout:
[    0.000000]   * 0xfff9f000..0xfffff000  : fixmap
[    0.000000]   * 0xff800000..0xffc00000  : highmem PTEs
[    0.000000]   * 0xfef37000..0xff800000  : early ioremap
[    0.000000]   * 0xf1000000..0xfef37000  : vmalloc & ioremap
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] Hierarchical RCU implementation.
[    0.000000] 	Build-time adjustment of leaf fanout to 32.
[    0.000000] 	RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=1.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=32, nr_cpu_ids=1
[    0.000000] NR_IRQS:512 nr_irqs:512 16
[    0.000000] mpic: Resetting
[    0.000000] mpic: Setting up MPIC " MPIC 1   " version 1.2 at 80040000, max 1 CPUs
[    0.000000] mpic: ISU size: 64, shift: 6, mask: 3f
[    0.000000] mpic: Initializing for 64 sources
[    0.000000] GMT Delta read from XPRAM: 0 minutes, DST: on
[    0.000000] time_init: decrementer frequency = 100.000000 MHz
[    0.000000] time_init: processor frequency   = 900.000000 MHz
[    0.001095] clocksource: timebase: mask: 0xffffffffffffffff max_cycles: 0x171024e7e0, max_idle_ns: 440795205315 ns
[    0.001390] clocksource: timebase mult[a000000] shift[24] registered
[    0.001845] clockevent: decrementer mult[1999999a] shift[32] cpu[0]
[    0.017324] Console: colour dummy device 80x25
[    0.017578] console [tty0] enabled
[    0.017734] bootconsole [udbg0] disabled
[    0.025361] pid_max: default: 32768 minimum: 301
[    0.027534] Security Framework initialized
[    0.027651] Yama: becoming mindful.
[    0.032695] AppArmor: AppArmor initialized
[    0.036428] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.036486] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.079970] Initializing cgroup subsys io
[    0.080500] Initializing cgroup subsys memory
[    0.080983] Initializing cgroup subsys devices
[    0.081164] Initializing cgroup subsys freezer
[    0.081325] Initializing cgroup subsys net_cls
[    0.081478] Initializing cgroup subsys perf_event
[    0.081664] Initializing cgroup subsys net_prio
[    0.081829] Initializing cgroup subsys pids
[    0.082751] ftrace: allocating 26562 entries in 78 pages
[    0.210111] PowerMac SMP probe found 1 cpus
[    0.238820] Brought up 1 CPUs
[    0.262742] devtmpfs: initialized
[    0.283110] evm: security.selinux
[    0.283173] evm: security.SMACK64
[    0.283192] evm: security.SMACK64EXEC
[    0.283211] evm: security.SMACK64TRANSMUTE
[    0.283229] evm: security.SMACK64MMAP
[    0.283247] evm: security.ima
[    0.283271] evm: security.capability
[    0.288323] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[    0.314539] NET: Registered protocol family 16
[    0.324119] cpuidle: using governor ladder
[    0.324414] cpuidle: using governor menu
[    0.358339] PCI: Probing PCI hardware
[    0.363973] PCI host bridge to bus 0000:00
[    0.364863] pci_bus 0000:00: root bus resource [io  0x0000-0x7fffff]
[    0.365058] pci_bus 0000:00: root bus resource [mem 0x80000000-0x8fffffff]
[    0.365507] pci_bus 0000:00: root bus resource [bus 00-ff]
[    0.365987] pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to ff
[    0.368097] pci 0000:00:0b.0: [106b:001f] type 00 class 0x060000
[    0.373345] pci 0000:00:0c.0: [106b:0022] type 00 class 0xff0000
[    0.374833] pci 0000:00:0c.0: reg 0x10: [mem 0x80000000-0x8007ffff]
[    0.394986] pci 0000:00:0d.0: [106b:003f] type 00 class 0x0c0310
[    0.395999] pci 0000:00:0d.0: reg 0x10: [mem 0x80080000-0x800800ff]
[    0.402045] pci 0000:00:0e.0: [106b:0021] type 00 class 0x020000
[    0.402828] pci 0000:00:0e.0: reg 0x10: [mem 0x80200000-0x803fffff]
[    0.407388] pci 0000:00:0f.0: [1002:5046] type 00 class 0x030000
[    0.409097] pci 0000:00:0f.0: reg 0x10: [mem 0x81000000-0x81ffffff pref]
[    0.411205] pci 0000:00:0f.0: reg 0x14: [io  0x1000-0x10ff]
[    0.412979] pci 0000:00:0f.0: reg 0x18: [mem 0x82000000-0x82003fff]
[    0.423850] pci 0000:00:0f.0: reg 0x30: [mem 0x82010000-0x8201ffff pref]
[    0.428042] pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 00
[    0.436557] pci_bus 0000:00: resource 4 [io  0x0000-0x7fffff]
[    0.436676] pci_bus 0000:00: resource 5 [mem 0x80000000-0x8fffffff]
[    0.484909] vgaarb: setting as boot device: PCI:0000:00:0f.0
[    0.485313] vgaarb: device added: PCI:0000:00:0f.0,decodes=io+mem,owns=io+mem,locks=none
[    0.485428] vgaarb: loaded
[    0.485518] vgaarb: bridge control possible 0000:00:0f.0
[    0.491977] SCSI subsystem initialized
[    0.493404] libata version 3.00 loaded.
[    0.495327] usbcore: registered new interface driver usbfs
[    0.495999] usbcore: registered new interface driver hub
[    0.496618] usbcore: registered new device driver usb
[    0.518840] NetLabel: Initializing
[    0.519021] NetLabel:  domain hash size = 128
[    0.519066] NetLabel:  protocols = UNLABELED CIPSOv4
[    0.522113] NetLabel:  unlabeled traffic allowed by default
[    0.528433] clocksource: Switched to clocksource timebase
[    0.719689] AppArmor: AppArmor Filesystem Enabled
[    0.758307] NET: Registered protocol family 2
[    0.770664] TCP established hash table entries: 8192 (order: 3, 32768 bytes)
[    0.771112] TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
[    0.771941] TCP: Hash tables configured (established 8192 bind 8192)
[    0.774338] UDP hash table entries: 512 (order: 2, 16384 bytes)
[    0.774663] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[    0.777937] NET: Registered protocol family 1
[    0.782506] PCI: CLS 0 bytes, default 32
[    0.795575] Trying to unpack rootfs image as initramfs...
[   42.521883] Freeing initrd memory: 22500K (c1b00000 - c30f9000)
[   42.524139] Thermal assist unit using timers, shrink_timer: 500 jiffies
[   42.537487] futex hash table entries: 256 (order: 1, 8192 bytes)
[   42.538917] audit: initializing netlink subsys (disabled)
[   42.541071] audit: type=2000 audit(1551921969.428:1): initialized
[   42.546535] Initialise system trusted keyring
[   42.587959] zbud: loaded
[   42.591517] VFS: Disk quotas dquot_6.6.0
[   42.592323] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[   42.603778] fuse init (API version 7.23)
[   42.607406] Key type big_key registered
[   42.620971] Key type asymmetric registered
[   42.621102] Asymmetric key parser 'x509' registered
[   42.621458] bounce: pool size: 64 pages
[   42.621850] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[   42.623004] io scheduler noop registered
[   42.623139] io scheduler deadline registered (default)
[   42.623980] io scheduler cfq registered
[   42.628539] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[   42.628917] pciehp: PCI Express Hot Plug Controller Driver version: 0.4
[   42.633997] aty128fb: Found Intel x86 BIOS ROM Image
[   42.634043] aty128fb: Rage128 BIOS located
[   42.637754] aty128fb: Rage128 PF PRO AGP [chip rev 0x0] 16M 128-bit SDR SGRAM (1:1)
[   42.663788] Console: switching to colour frame buffer device 128x48
[   42.670174] fb0: ATY Rage128 frame buffer device on Rage128 PF PRO AGP
[   42.697145] Serial: 8250/16550 driver, 32 ports, IRQ sharing enabled
[   42.736786] pmac_zilog: 0.6 (Benjamin Herrenschmidt <benh@kernel.crashing.org>)
[   42.739112] Generic non-volatile memory driver v1.1
[   42.740560] Linux agpgart interface v0.103
[   42.849029] brd: module loaded
[   42.872708] loop: module loaded
[   42.877820] MacIO PCI driver attached to Keylargo chipset
[   42.885911] 0.00013020:ch-a: ttyPZ0 at MMIO 0x80013020 (irq = 37, base_baud = 230400) is a Z85c30 ESCC - Serial port
[   42.888183] 0.00013000:ch-b: ttyPZ1 at MMIO 0x80013000 (irq = 36, base_baud = 230400) is a Z85c30 ESCC - Serial port
[   42.894233] Macintosh CUDA driver v0.5 for Unified ADB.
[   42.902662] adb: starting probe task...
[   42.928854] adb devices: [2]: 2 2 [3]: 3 3
[   42.934108] ADB keyboard at 2, handler 1
[   42.934745] Detected ADB keyboard, type ANSI.
[   42.937991] input: ADB keyboard as /devices/virtual/input/input0
[   42.947964] ADB mouse at 3, handler set to 3 (Mouse Systems A3 Mouse, or compatible)
[   42.951599] input: ADB mouse as /devices/virtual/input/input1
[   42.952024] adb: finished probe task...
[   43.920429] pata-macio 0.00020000:ata-3: Activating pata-macio chipset KeyLargo ATA-3, Apple bus ID 0
[   43.936878] scsi host0: pata_macio
[   43.939870] ata1: PATA max MWDMA2 irq 16
[   44.967714] pata-macio 0.00021000:ata-3: Activating pata-macio chipset KeyLargo ATA-3, Apple bus ID 1
[   44.974119] scsi host1: pata_macio
[   44.975918] ata2: PATA max MWDMA2 irq 18
[   44.982042] libphy: Fixed MDIO Bus: probed
[   44.982313] tun: Universal TUN/TAP device driver, 1.6
[   44.982388] tun: (C) 1999-2004 Max Krasnyansky <maxk@qualcomm.com>
[   44.984418] PPP generic driver version 2.4.2
[   44.986191] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[   44.986883] ehci-pci: EHCI PCI platform driver
[   44.987676] ehci-platform: EHCI generic platform driver
[   44.987893] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[   44.988241] ohci-pci: OHCI PCI platform driver
[   44.990632] ohci-pci 0000:00:0d.0: OHCI PCI host controller
[   44.991910] ohci-pci 0000:00:0d.0: new USB bus registered, assigned bus number 1
[   44.994302] ohci-pci 0000:00:0d.0: irq 28, io mem 0x80080000
[   45.062034] usb usb1: New USB device found, idVendor=1d6b, idProduct=0001
[   45.062100] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[   45.062157] usb usb1: Product: OHCI PCI host controller
[   45.062214] usb usb1: Manufacturer: Linux 4.4.0-21-powerpc-smp ohci_hcd
[   45.062269] usb usb1: SerialNumber: 0000:00:0d.0
[   45.069026] hub 1-0:1.0: USB hub found
[   45.070228] hub 1-0:1.0: 3 ports detected
[   45.080545] ohci-platform: OHCI generic platform driver
[   45.080879] uhci_hcd: USB Universal Host Controller Interface driver
[   45.084880] mousedev: PS/2 mouse device common for all mice
[   45.087380] i2c /dev entries driver
[   45.089166] device-mapper: uevent: version 1.0.3
[   45.090879] device-mapper: ioctl: 4.34.0-ioctl (2015-10-28) initialised: dm-devel@redhat.com
[   45.092715] ledtrig-cpu: registered to indicate activity on CPUs
[   45.097725] NET: Registered protocol family 10
[   45.111039] NET: Registered protocol family 17
[   45.111983] Key type dns_resolver registered
[   45.116374] registered taskstats version 1
[   45.116826] Loading compiled-in X.509 certificates
[   45.147038] ata2.01: NODEV after polling detection
[   45.149977] ata2.00: ATAPI: QEMU DVD-ROM, 2.5+, max UDMA/100
[   45.153267] ata2.00: configured for MWDMA2
[   45.160487] Loaded X.509 cert 'Build time autogenerated kernel key: 4be2596f661edc589a661416cf2887229e4b74d6'
[   45.162645] zswap: loaded using pool lzo/zbud
[   45.201636] scsi 1:0:0:0: CD-ROM            QEMU     QEMU DVD-ROM     2.5+ PQ: 0 ANSI: 5
[   45.224538] sr 1:0:0:0: [sr0] scsi3-mmc drive: 4x/4x cd/rw xa/form2 tray
[   45.224946] cdrom: Uniform CD-ROM driver Revision: 3.20
[   45.234943] sr 1:0:0:0: Attached scsi CD-ROM sr0
[   45.236677] sr 1:0:0:0: Attached scsi generic sg0 type 5
[   45.467727] usb 1-1: new full-speed USB device number 2 using ohci-pci
[   45.542304] Key type trusted registered
[   45.707529] usb 1-1: New USB device found, idVendor=0627, idProduct=0001
[   45.707610] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=9
[   45.707660] usb 1-1: Product: QEMU USB Mouse
[   45.707707] usb 1-1: Manufacturer: QEMU
[   45.707754] usb 1-1: SerialNumber: 89126-pci.2:0d.0-1
[   46.057491] Key type encrypted registered
[   46.057694] AppArmor: AppArmor sha1 policy hashing enabled
[   46.058240] ima: No TPM chip found, activating TPM-bypass!
[   46.061838] evm: HMAC attrs: 0x1
[   46.065722] hctosys: unable to open rtc device (rtc0)
[   46.067749] PM: Hibernation image not present or could not be loaded.
[   46.246599] Freeing unused kernel memory: 536K (c0abf000 - c0b45000)
[   47.721106] random: systemd-udevd urandom read with 6 bits of entropy available
[   49.482532] sungem.c:v1.0 David S. Miller <davem@redhat.com>
[   49.533848] hidraw: raw HID events driver (C) Jiri Kosina
[   49.550636] gem 0000:00:0e.0 eth0: Sun GEM (PCI) 10/100/1000BaseT Ethernet 52:54:00:12:34:56
[   49.683529] usbcore: registered new interface driver usbhid
[   49.683618] usbhid: USB HID core driver
[   51.146412] gem 0000:00:0e.0 enp0s14: renamed from eth0
[   51.203558] input: QEMU QEMU USB Mouse as /devices/pci0000:00/0000:00:0d.0/usb1/1-1/1-1:1.0/0003:0627:0001.0001/input/input2
[   51.212432] hid-generic 0003:0627:0001.0001: input,hidraw0: USB HID v0.01 Mouse [QEMU QEMU USB Mouse] on usb-0000:00:0d.0-1/input0
[   59.567766] ISO 9660 Extensions: RRIP_1991A
[   61.508333] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[   62.578497] random: nonblocking pool is initialized
[  185.166818] systemd[1]: systemd 229 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN)
[  185.174700] systemd[1]: Detected architecture ppc.
[  185.177665] systemd[1]: Set hostname to <lubuntu>.
[  185.180941] systemd[1]: Initializing machine ID from random generator.
[  188.513416] systemd[1]: Listening on Journal Socket (/dev/log).
[  188.523606] systemd[1]: Created slice User and Session Slice.
[  188.532621] systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point.
[  188.533578] systemd[1]: Listening on Syslog Socket.
[  188.534075] systemd[1]: Reached target Remote File Systems (Pre).
[  188.534369] systemd[1]: Reached target Remote File Systems.
[  188.536739] systemd[1]: Listening on /dev/initctl Compatibility Named Pipe.
[  188.537923] systemd[1]: Listening on Journal Socket.
[  188.539844] systemd[1]: Listening on LVM2 metadata daemon socket.
[  188.540169] systemd[1]: Reached target User and Group Name Lookups.
[  188.540770] systemd[1]: Listening on LVM2 poll daemon socket.
[  188.543828] systemd[1]: Listening on udev Kernel Socket.
[  188.548038] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[  188.548596] systemd[1]: Reached target Encrypted Volumes.
[  188.549781] systemd[1]: Listening on Device-mapper event daemon FIFOs.
[  188.555361] systemd[1]: Listening on Journal Audit Socket.
[  188.556406] systemd[1]: Listening on udev Control Socket.
[  188.556614] systemd[1]: Reached target Swap.
[  188.558477] systemd[1]: Created slice System Slice.
[  188.609199] systemd[1]: Starting Nameserver information manager...
[  188.626458] systemd[1]: Created slice system-serial\x2dgetty.slice.
[  188.753461] systemd[1]: Mounting POSIX Message Queue File System...
[  189.119604] systemd[1]: Starting Create list of required static device nodes for the current kernel...
[  189.456628] systemd[1]: Starting LSB: controls configuration of serial ports...
[  190.385372] systemd[1]: Started Read required files in advance.
[  190.966494] systemd[1]: Starting Journal Service...
[  191.392684] systemd[1]: Mounting Debug File System...
[  191.393574] systemd[1]: Reached target Slices.
[  191.917737] systemd[1]: Starting Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling...
[  192.874564] systemd[1]: Starting Uncomplicated firewall...
[  193.535007] systemd[1]: Starting Load Kernel Modules...
[  194.189287] systemd[1]: Starting Remount Root and Kernel File Systems...
[  195.402615] systemd[1]: Mounted Debug File System.
[  195.460432] systemd[1]: Mounted POSIX Message Queue File System.
[  195.975801] systemd[1]: Started Create list of required static device nodes for the current kernel.
[  196.063460] systemd[1]: Started Uncomplicated firewall.
[  196.199635] systemd[1]: Started Load Kernel Modules.
[  197.889482] systemd[1]: Started Nameserver information manager.
[  198.315375] systemd[1]: Started Remount Root and Kernel File Systems.
[  198.856837] systemd[1]: Started Journal Service.
[  211.834600] systemd-journald[817]: Received request to flush runtime journal from PID 1
[  230.830117] rtc-generic rtc-generic: rtc core: registered rtc-generic as rtc0
[  255.138657] zram: Added device: zram0
[  259.324679] zram0: detected capacity change from 0 to 523661312
[  262.272144] Adding 511384k swap on /dev/zram0.  Priority:5 extents:1 across:511384k SSFS
[  295.870013] IPv6: ADDRCONF(NETDEV_UP): enp0s14: link is not ready
[  296.012316] sungem_phy: PHY ID: 406210, addr: 0
[  296.013285] gem 0000:00:0e.0 enp0s14: Found BCM5201 PHY
[  296.015056] IPv6: ADDRCONF(NETDEV_UP): enp0s14: link is not ready
[  297.216561] gem 0000:00:0e.0 enp0s14: Link is up at 100 Mbps, full-duplex
[  297.217522] gem 0000:00:0e.0 enp0s14: Pause is disabled
[  297.221530] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s14: link becomes ready
[ 6065.191742] [drm] Initialized drm 1.1.0 20060810
[ 6065.459140] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 6065.459224] [drm] No driver support for vblank timestamp query.
[ 6065.459442] [drm] Initialized r128 2.5.0 20030725 for 0000:00:0f.0 on minor 0
[ 6671.391221] pcmanfm[5032]: unhandled signal 11 at 00000004 nip 1fba3bf0 lr 20539d40 code 30001
[ 6749.450215] pcmanfm[5103]: unhandled signal 11 at 00000004 nip 1fcdfbf0 lr 20675d40 code 30001
[ 6769.840585] pcmanfm[5132]: unhandled signal 11 at 00000004 nip 1f946bf0 lr 202dcd40 code 30001
[ 6783.255989] pcmanfm[5140]: unhandled signal 11 at 00000004 nip 1fd9bbf0 lr 20731d40 code 30001
[ 6794.223292] pcmanfm[5148]: unhandled signal 11 at 00000004 nip 1f88cbf0 lr 20222d40 code 30001
[ 6804.903538] pcmanfm[5156]: unhandled signal 11 at 00000004 nip 1f9afbf0 lr 20345d40 code 30001

Hello,

On Thu, 7 Mar 2019, Andrew Randrianasulu wrote:
> Tried this with mac99 machine and lubuntu 16.04 ppc.

Thanks for testing it. Do you want to add a Tested-by: tag? You can reply 
to the patch (or series cover letter for all patches) with your Tested-by: 
to declare that.

> After upgrading r128 driver to -hwe part to get past this bug
> https://bugs.freedesktop.org/show_bug.cgi?id=91622
>
> and disabling accel I can see some image and cursor!

Good. Accel is still not quite right, I now about that but couldn't fix it 
yet. I'd need more time for that which I don't have now. So for now only 
console and unaccelerated X is expected to work.

> qemu command:
>
> ppc64-softmmu/qemu-system-ppc64 -M mac99 -device ati-vga \
> -cdrom /mnt/sdb1/ISO/lubuntu-16.04-desktop-powerpc.iso -m 1G -boot d -cpu g4 -device usb-mouse -smp 1

The -cpu g4 is not needed as that's the default (it's also single core so 
-smp 1 is not needed either). You're probably also better off using -M 
mac99,via=pmu which is closer to real hardware and adds USB keyboard and 
mouse as well instead of ADB ones so you can omit the -device usb-mouse 
option with that as well.

> model rv100 doesn't recognized by openfirmware, so no output from it.

rv100 is only supported for fulong2e console at the moment because drivers 
for it probably need more features of the GPU implemented (such as command 
FIFO) that aren't emulated yet. At first I only target rage128p as found 
in PowerMac3,1 without 3D for Linux, X, MorphOS and maybe MacOS.

> Menus in wondows still at wrong place (not shown, even), but generally speaking some image is on screen.

I wonder if it's a bug in guest or due to Linux FB using some 2D ops that 
are not correct? Maybe this could be cross-checked with an Intel version 
of the same lubuntu version to make sure it's not a PPC specific xorg 
problem.

Regards,
BALATON Zoltan