[Solved] Epiphany Troubleshooting

Hardware related problems and workarounds

[Solved] Epiphany Troubleshooting

Postby garrekds » Sat Jul 29, 2017 12:33 am

Hello community,

I have four Parallella boards and I cannot seem to run any of the examples on Epiphany on any of the boards (they are not networked in a cluster right now, but that is the goal).

Some info:
Using a 5V 2.5 amp power supply that was shipped with the kit.
Using the SD cards that were included in the cluster kit and I installed the appropriate image as per the quickstart guide, using the (https://github.com/parallella/parabuntu ... 020.img.gz).
Using heatsink and two 12-inch fans, powered separately.

I also tried sudo apt-get update and upgrade to make sure I'm on the latest version and have the latest versions o the examples and tests. I found the thread started by korifey and tried the things suggested there, and I will include those results below. The problem described there seems similar to mine. I'm not really sure what else to do at this point and any help would be greatly appreciated.

Thank you,

Garrek

Output from a parallella example:
Code: Select all
parallella@parallella:~/parallella-examples/eprime2$ ./build.sh
parallella@parallella:~/parallella-examples/eprime2$ ./run.sh
Usage:  ./run.sh numberic-value
parallella@parallella:~/parallella-examples/eprime2$ ./run.sh 126
prime.elf: e_reset_system(): EPIPHANY_DEV file open failure.
prime.elf: e_open(): EPIPHANY_DEV file open failure.
./run.sh: line 20: 11425 Segmentation fault      bin/prime.elf ${PRIMES_PER_CORE}


Output from test.sh:
Code: Select all
epiphany-examples  test.sh
parallella@parallella:~/tests/epiphany-sdk$ ./test.sh
Cloning into 'epiphany-examples'...
remote: Counting objects: 4095, done.
remote: Total 4095 (delta 0), reused 0 (delta 0), pack-reused 4095
Receiving objects: 100% (4095/4095), 1.04 MiB | 650.00 KiB/s, done.
Resolving deltas: 100% (2218/2218), done.
Checking connectivity... done.
Phase 1: Build and run all tests once

Directory                           Build       Test       
============================================================
apps/dotproduct                     OK          EXIT_FAIL   
apps/e-bandwidth-test               OK          EXIT_FAIL   
apps/e-dump-mem                     OK          EXIT_FAIL   
apps/e-dump-regs                    OK          SKIP       
apps/e-fill-mem                     OK          EXIT_FAIL   
apps/e-mem-sync                     OK          EXIT_FAIL   
apps/e-toggle-led                   OK          N/A         
apps/eprime                         OK          SKIP       
apps/erm                            OK          SKIP       
apps/erm_example                    OK          SKIP       
apps/fft2d                          OK          EXIT_FAIL   
apps/hello-world                    OK          EXIT_FAIL   
apps/matmul-16                      OK          EXIT_FAIL   
apps/matmul-64                      OK          SKIP       
apps/shm_test                       OK          EXIT_FAIL   
archive/e-init                      SKIP        SKIP       
archive/e-standby-test              SKIP        SKIP       
archive/e-test                      SKIP        SKIP       
cpu/arithmode                       OK          EXIT_FAIL   
cpu/assembly                        OK          EXIT_FAIL   
cpu/basic_math                      OK          EXIT_FAIL   
cpu/complex_numbers                 OK          EXIT_OK     
cpu/ctimer                          OK          SKIP       
cpu/interrupt-demo                  OK          EXIT_FAIL   
cpu/interrupts                      OK          EXIT_FAIL   
cpu/mutex                           OK          EXIT_FAIL   
cpu/nested_interrupts               OK          EXIT_FAIL   
cpu/register_test                   OK          EXIT_FAIL   
cpu/remote_call                     OK          EXIT_FAIL   
dma/dma_2d                          OK          EXIT_FAIL   
dma/dma_chain                       OK          EXIT_FAIL   
dma/dma_interrupt                   OK          EXIT_FAIL   
dma/dma_message_read                OK          EXIT_FAIL   
dma/dma_message_write               OK          EXIT_FAIL   
dma/dma_slave                       OK          EXIT_FAIL   
emesh/emesh_bandwidth_all2one       OK          EXIT_FAIL   
emesh/emesh_bandwidth_bisection     OK          EXIT_FAIL   
emesh/emesh_bandwidth_neighbour     OK          EXIT_FAIL   
emesh/emesh_read_latency            OK          EXIT_FAIL   
emesh/emesh_traffic                 OK          EXIT_FAIL   
errata/noc_fifo                     OK          EXIT_FAIL   
io/link_lowpower_mode               OK          SKIP       
labs/clockgating_mode               OK          SKIP       
labs/hardware_barrier               OK          SKIP       
labs/hardware_loops                 OK          SKIP       
labs/mailbox-test                   OK          SKIP       
labs/mem_protect                    OK          SKIP       
softcache/basic_math                OK          EXIT_FAIL   
softcache/math_example              OK          EXIT_FAIL   
test/e-extmem-test                  OK          N/A         
test/e-free-resource-leak-test      OK          EXIT_FAIL   
test/e-loopback-test                OK          SKIP       
test/e-matmul-test                  SKIP        SKIP       
test/e-mem-test                     OK          EXIT_FAIL   
test/e-mesh-test                    OK          EXIT_FAIL   
test/e-read-buf                     OK          EXIT_FAIL   
test/e-read-word                    OK          EXIT_FAIL   
test/e-regfile-test                 OK          EXIT_FAIL   
test/e-reset                        OK          EXIT_OK     
test/e-test                         SKIP        SKIP       
test/e-write-buf                    OK          EXIT_FAIL   
test/e-write-word                   OK          EXIT_FAIL   
test/test-elink-rx-remapping        OK          EXIT_FAIL   
test/test-linker-script-symbols     OK          EXIT_FAIL   
test/test-load-elf-w-empty-segment  OK          EXIT_FAIL   


Phase 2: Select repeated tests

Directory                           Test        Iterations 
============================================================
apps/e-bandwidth-test (100 iterations)

                                        FAIL        1
apps/matmul-16 (100 iterations)

                                        FAIL        1
dma/dma_slave (100 iterations)

                                        FAIL        1
test/e-mem-test (10 iterations)

                                        FAIL        1


============================================================
STATUS: FAIL       

FAIL



dmesg
Code: Select all
parallella@parallella:~$ dmesg
[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 4.6.0+ (esim@adapteva-dev) (gcc version 4.9.3 20141031 (prerelease) (Linaro GCC 2014.11) ) #1 SMP PREEMPT Wed Dec 7 13:27:40 CET 2016
[    0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] Machine model: Adapteva Parallella Board with headless bitstream
[    0.000000] cma: Reserved 128 MiB at 0x36000000
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] On node 0 totalpages: 253952
[    0.000000] free_area_init_node: node 0, pgdat c0829000, node_mem_map ef838000
[    0.000000]   Normal zone: 1536 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 196608 pages, LIFO batch:31
[    0.000000]   HighMem zone: 57344 pages, LIFO batch:15
[    0.000000] percpu: Embedded 12 pages/cpu @ef810000 s19392 r8192 d21568 u49152
[    0.000000] pcpu-alloc: s19392 r8192 d21568 u49152 alloc=12*4096
[    0.000000] pcpu-alloc: [0] 0 [0] 1
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 252416
[    0.000000] Kernel command line: console=ttyPS0,115200 earlyprintk root=/dev/mmcblk0p2 rootfstype=ext4 rw rootwait
[    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] Memory: 867280K/1015808K available (5652K kernel code, 279K rwdata, 2132K rodata, 260K init, 159K bss, 17456K reserved, 131072K cma-reserved, 98304K highmem)
[    0.000000] Virtual kernel memory layout:
    vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
    vmalloc : 0xf0800000 - 0xff800000   ( 240 MB)
    lowmem  : 0xc0000000 - 0xf0000000   ( 768 MB)
    pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
    modules : 0xbf000000 - 0xbfe00000   (  14 MB)
      .text : 0xc0008000 - 0xc07a25f0   (7786 kB)
      .init : 0xc07a3000 - 0xc07e4000   ( 260 kB)
      .data : 0xc07e4000 - 0xc0829fa0   ( 280 kB)
       .bss : 0xc0829fa0 - 0xc0851c44   ( 160 kB)
[    0.000000] Preemptible 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=2.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=32, nr_cpu_ids=2
[    0.000000] NR_IRQS:16 nr_irqs:16 16
[    0.000000] slcr mapped to f0800000
[    0.000000] L2C: platform modifies aux control register: 0x72360000 -> 0x72760000
[    0.000000] L2C: DT/platform modifies aux control register: 0x72360000 -> 0x72760000
[    0.000000] L2C-310 erratum 769419 enabled
[    0.000000] L2C-310 enabling early BRESP for Cortex-A9
[    0.000000] L2C-310 full line of zeros enabled for Cortex-A9
[    0.000000] L2C-310 ID prefetch enabled, offset 1 lines
[    0.000000] L2C-310 dynamic clock gating enabled, standby mode enabled
[    0.000000] L2C-310 cache controller enabled, 8 ways, 512 kB
[    0.000000] L2C-310: CACHE_ID 0x410000c8, AUX_CTRL 0x76760001
[    0.000000] zynq_clock_init: clkc starts at f0800100
[    0.000000] Zynq clock init
[    0.000000] clocksource: ttc_clocksource: mask: 0xffff max_cycles: 0xffff, max_idle_ns: 537538477 ns
[    0.000018] sched_clock: 16 bits at 54kHz, resolution 18432ns, wraps every 603975816ns
[    0.000055] timer #0 at f0808000, irq=16
[    0.000387] Console: colour dummy device 80x30
[    0.000405] Calibrating delay loop... 1332.01 BogoMIPS (lpj=6660096)
[    0.090188] pid_max: default: 32768 minimum: 301
[    0.090336] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.090354] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.090999] CPU: Testing write buffer coherency: ok
[    0.091220] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.091294] Setting up static identity map for 0x8280 - 0x82d8
[    0.280187] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[    0.280297] Brought up 2 CPUs
[    0.280297] SMP: Total of 2 processors activated (2664.03 BogoMIPS).
[    0.280316] CPU: All CPU(s) started in SVC mode.
[    0.281385] devtmpfs: initialized
[    0.285311] VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4
[    0.285698] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.293642] pinctrl core: initialized pinctrl subsystem
[    0.295191] NET: Registered protocol family 16
[    0.297273] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.320664] cpuidle: using governor ladder
[    0.322102] zynq-gpio e000a000.gpio: could not find pctldev for node /amba/slcr@f8000000/pinctrl@700/gpio0-default, deferring probe
[    0.327576] hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers.
[    0.327594] hw-breakpoint: maximum watchpoint size is 4 bytes.
[    0.327742] zynq-ocm f800c000.ocmc: ZYNQ OCM pool: 256 KiB @ 0xf0880000
[    0.328166] zynq-pinctrl 700.pinctrl: zynq pinctrl initialized
[    0.352017] SCSI subsystem initialized
[    0.352422] usbcore: registered new interface driver usbfs
[    0.352496] usbcore: registered new interface driver hub
[    0.352680] usbcore: registered new device driver usb
[    0.353141] media: Linux media interface: v0.10
[    0.353215] Linux video capture interface: v2.00
[    0.353289] pps_core: LinuxPPS API ver. 1 registered
[    0.353289] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.353344] PTP clock support registered
[    0.353436] EDAC MC: Ver: 3.0.0
[    0.360680] Advanced Linux Sound Architecture Driver Initialized.
[    0.361454] Bluetooth: Core ver 2.21
[    0.361509] NET: Registered protocol family 31
[    0.361528] Bluetooth: HCI device and connection manager initialized
[    0.361546] Bluetooth: HCI socket layer initialized
[    0.361546] Bluetooth: L2CAP socket layer initialized
[    0.361583] Bluetooth: SCO socket layer initialized
[    0.362357] clocksource: Switched to clocksource ttc_clocksource
[    0.376200] NET: Registered protocol family 2
[    0.376956] TCP established hash table entries: 8192 (order: 3, 32768 bytes)
[    0.377066] TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
[    0.377214] TCP: Hash tables configured (established 8192 bind 8192)
[    0.377287] UDP hash table entries: 512 (order: 2, 16384 bytes)
[    0.377343] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[    0.377582] NET: Registered protocol family 1
[    0.378227] hw perfevents: enabled with armv7_cortex_a9 PMU driver, 7 counters available
[    0.379591] futex hash table entries: 512 (order: 3, 32768 bytes)
[    0.380531] workingset: timestamp_bits=28 max_order=18 bucket_order=0
[    0.381342] fuse init (API version 7.24)
[    0.382872] bounce: pool size: 64 pages
[    0.382891] io scheduler noop registered
[    0.382909] io scheduler deadline registered
[    0.382928] io scheduler cfq registered (default)
[    0.383130] Error: Driver 'mwipcore' is already registered, aborting...
[    0.384605] dma-pl330 f8003000.dmac: Loaded driver for PL330 DMAC-241330
[    0.384623] dma-pl330 f8003000.dmac:    DBUFF-128x8bytes Num_Chans-8 Num_Peri-4 Num_Events-16
[    0.385527] e0001000.serial: ttyPS0 at MMIO 0xe0001000 (irq = 25, base_baud = 3125000) is a xuartps
[    0.878550] console [ttyPS0] enabled
[    0.881425] xdevcfg f8007000.devcfg: ioremap 0xf8007000 to f085e000
[    0.886881] [drm] Initialized drm 1.1.0 20060810
[    0.901756] brd: module loaded
[    0.910235] loop: module loaded
[    0.922842] zram: Added device: zram0
[    0.927156] zynq-qspi e000d000.spi: couldn't determine configuration info about dual memories. defaulting to single memory
[    0.937717] m25p80 spi32766.0: SPI-NOR-UniqueID 1000002333426221004600260710131a70
[    0.945219] m25p80 spi32766.0: n25q128a13 (16384 Kbytes)
[    0.949182] 3 ofpart partitions found on MTD device spi32766.0
[    0.953679] Creating 3 MTD partitions on "spi32766.0":
[    0.957495] 0x000000000000-0x0000004e0000 : "boot"
[    0.962214] 0x0000004e0000-0x000000500000 : "bootenv"
[    0.977070] 0x000000ff0000-0x000001000000 : "version"
[    0.993640] gpiod_set_value: invalid GPIO
[    0.997161] libphy: MACB_mii_bus: probed
[    1.072641] macb e000b000.ethernet eth0: Cadence GEM rev 0x00020118 at 0xe000b000 irq 27 (04:4f:8b:00:25:97)
[    1.081101] Marvell 88E1318S e000b000.etherne:00: attached PHY driver [Marvell 88E1318S] (mii_bus:phy_addr=e000b000.etherne:00, irq=-1)
[    1.092437] usbcore: registered new interface driver asix
[    1.096529] usbcore: registered new interface driver ax88179_178a
[    1.101303] usbcore: registered new interface driver cdc_ether
[    1.105855] usbcore: registered new interface driver net1080
[    1.110169] usbcore: registered new interface driver cdc_subset
[    1.114795] usbcore: registered new interface driver zaurus
[    1.119090] usbcore: registered new interface driver cdc_ncm
[    1.124453] aoe: AoE v85 initialised.
[    1.126757] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    1.132047] usbcore: registered new interface driver usb-storage
[    1.136895] usbcore: registered new interface driver usbserial
[    1.141393] usbcore: registered new interface driver usbserial_generic
[    1.146627] usbserial: USB Serial support registered for generic
[    1.151309] usbcore: registered new interface driver ftdi_sio
[    1.155751] usbserial: USB Serial support registered for FTDI USB Serial Device
[    1.162221] e0002000.usb supply vbus not found, using dummy regulator
[    1.170184] ci_hdrc ci_hdrc.0: unable to init phy: -110
[    1.174110] ci_hdrc: probe of ci_hdrc.0 failed with error -110
[    1.178902] e0003000.usb supply vbus not found, using dummy regulator
[    1.184229] ULPI transceiver vendor/product ID 0x0424/0x0007
[    1.188505] Found SMSC USB3320 ULPI transceiver.
[    1.191805] ULPI integrity check: passed.
[    1.194533] ci_hdrc ci_hdrc.1: EHCI Host Controller
[    1.198071] ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 1
[    1.222384] ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00
[    1.227250] hub 1-0:1.0: USB hub found
[    1.229646] hub 1-0:1.0: 1 port detected
[    1.234143] mousedev: PS/2 mouse device common for all mice
[    1.238770] i2c /dev entries driver
[    2.232392] cdns-i2c e0004000.i2c: timeout waiting on completion
[    3.232374] cdns-i2c e0004000.i2c: timeout waiting on completion
[    4.232374] cdns-i2c e0004000.i2c: timeout waiting on completion
[    5.232374] cdns-i2c e0004000.i2c: timeout waiting on completion
[    5.237000] 1P35V: failed to enable
[    5.239304] isl9305 0-0068: Failed to register DCD2: -110
[    5.243562] isl9305: probe of 0-0068 failed with error -110
[    5.247820] cdns-i2c e0004000.i2c: 100 kHz mmio e0004000 irq 22
[    5.254769] Xilinx Zynq CpuIdle Driver started
[    5.258197] sdhci: Secure Digital Host Controller Interface driver
[    5.263008] sdhci: Copyright(c) Pierre Ossman
[    5.266031] sdhci-pltfm: SDHCI platform and OF driver helper
[    5.312425] mmc0: SDHCI controller on e0101000.sdhci [e0101000.sdhci] using ADMA
[    5.323963] ledtrig-cpu: registered to indicate activity on CPUs
[    5.330728] hidraw: raw HID events driver (C) Jiri Kosina
[    5.350432] usbcore: registered new interface driver usbhid
[    5.354671] usbhid: USB HID core driver
[    5.366431] usbcore: registered new interface driver snd-usb-audio
[    5.371905] mmc0: new high speed SDHC card at address aaaa
[    5.376145] NET: Registered protocol family 10
[    5.379868] mmcblk0: mmc0:aaaa SU16G 14.8 GiB
[    5.384292]  mmcblk0: p1 p2
[    5.387407] sit: IPv6 over IPv4 tunneling driver
[    5.391554] NET: Registered protocol family 17
[    5.395277] bridge: automatic filtering via arp/ip/ip6tables has been deprecated. Update your scripts to load br_netfilter if you need this.
[    5.406908] Bluetooth: RFCOMM TTY layer initialized
[    5.410410] Bluetooth: RFCOMM socket layer initialized
[    5.414281] Bluetooth: RFCOMM ver 1.11
[    5.416677] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[    5.420640] Bluetooth: BNEP filters: protocol multicast
[    5.424584] Bluetooth: BNEP socket layer initialized
[    5.428197] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[    5.432916] Bluetooth: HIDP socket layer initialized
[    5.436786] Registering SWP/SWPB emulation handler
[    5.443717] hctosys: unable to open rtc device (rtc0)
[    5.451882] ALSA device list:
[    5.453504]   No soundcards found.
[    5.469061] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[    5.475863] VFS: Mounted root (ext4 filesystem) on device 179:2.
[    5.489502] devtmpfs: mounted
[    5.491475] Freeing unused kernel memory: 260K (c07a3000 - c07e4000)
[    5.496562] This architecture does not have kernel memory protection.
[    5.757782] random: systemd urandom read with 52 bits of entropy available
[    6.153705] random: nonblocking pool is initialized
[    7.407756] systemd-journald[1488]: Received request to flush runtime journal from PID 1
[    7.688772] elink 81000000.elink0: elink: vdd regulator not ready, retry
[    7.688791] elink 81000000.elink0: Could not get power supplies
[    7.711352] elink 81000000.elink0: Deferring probe.
[    8.626103] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[   13.072733] macb e000b000.ethernet eth0: link up (1000/Full)
[   13.072770] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
parallella@parallella:~$



Output of code as per help on the korifey thread:
Code: Select all
parallella@parallella:~$ sudo rmmod epiphany || echo reboot the board and try again
parallella@parallella:~$ sudo modprobe epiphany nopm
parallella@parallella:~$ dmesg | tail -n20
[    5.442814] Waiting for root device /dev/mmcblk0p2...
[    5.453117] mmcblk0: mmc0:aaaa SU16G 14.8 GiB
[    5.457541]  mmcblk0: p1 p2
[    5.563692] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[    5.570438] VFS: Mounted root (ext4 filesystem) on device 179:2.
[    5.584704] devtmpfs: mounted
[    5.586621] Freeing unused kernel memory: 260K (c07a3000 - c07e4000)
[    5.591598] This architecture does not have kernel memory protection.
[    5.863620] random: systemd urandom read with 72 bits of entropy available
[    6.161908] random: nonblocking pool is initialized
[    7.316369] systemd-journald[1497]: Received request to flush runtime journal from PID 1
[    7.783440] elink 81000000.elink0: elink: vdd regulator not ready, retry
[    7.783458] elink 81000000.elink0: Could not get power supplies
[    7.788896] elink 81000000.elink0: Deferring probe.
[    8.596538] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[   13.051186] macb e000b000.ethernet eth0: link up (1000/Full)
[   13.051204] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   56.538716] elink 81000000.elink0: elink: vdd regulator not ready, retry
[   56.538735] elink 81000000.elink0: Could not get power supplies
[   56.545075] elink 81000000.elink0: Deferring probe.
parallella@parallella:~$
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Last edited by garrekds on Sat Jul 29, 2017 1:03 pm, edited 1 time in total.
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Re: Epiphany Troubleshooting

Postby jar » Sat Jul 29, 2017 4:13 am

From your picture, I see you have the Zynq 7010, but you downloaded the image for the Zynq 7020. Try the other image.
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Re: Epiphany Troubleshooting

Postby garrekds » Sat Jul 29, 2017 1:02 pm

That is a very simple thing, and I didn't notice it, but that did the trick.

Thank you!
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