I am not a linux guru, but isn't there a way to know detailed why something crashed? If you could have provided me these logs, I may forward you somewhere...
I know nothing about linux either, the only 2 logs I know are the ones in the GUI which are below
[ 0.000000] Linux version 3.10.12 (xxl@ubuntu) (gcc version 4.6.4 (OpenWrt/Linaro GCC 4.6-2013.05 r38031) ) #10 Thu Dec 26 09:03:53 CST 2013
[ 0.000000] MyLoader: sysp=1bec2fee, boardp=fdd6ef6f, parts=fc031564
[ 0.000000] bootconsole [early0] enabled
[ 0.000000] CPU revision is: 00019374 (MIPS 24Kc)
[ 0.000000] SoC: Atheros AR9330 rev 1
[ 0.000000] Clocks: CPU:400.000MHz, DDR:400.000MHz, AHB:200.000MHz, Ref:25.000MHz
[ 0.000000] Determined physical RAM map:
[ 0.000000] memory: 04000000 @ 00000000 (usable)
[ 0.000000] Initrd not found or empty - disabling initrd
[ 0.000000] Zone ranges:
[ 0.000000] Normal [mem 0x00000000-0x03ffffff]
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x00000000-0x03ffffff]
[ 0.000000] On node 0 totalpages: 16384
[ 0.000000] free_area_init_node: node 0, pgdat 803005b0, node_mem_map 81000000
[ 0.000000] Normal zone: 128 pages used for memmap
[ 0.000000] Normal zone: 0 pages reserved
[ 0.000000] Normal zone: 16384 pages, LIFO batch:3
[ 0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
[ 0.000000] Primary data cache 32kB, 4-way, VIPT, cache aliases, linesize 32 bytes
[ 0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[ 0.000000] pcpu-alloc: [0] 0
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16256
[ 0.000000] Kernel command line: board=TL-WR741ND-v4 console=ttyATH0,115200 rootfstype=squashfs,jffs2 noinitrd
[ 0.000000] PID hash table entries: 256 (order: -2, 1024 bytes)
[ 0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
[ 0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.000000] Writing ErrCtl register=00000000
[ 0.000000] Readback ErrCtl register=00000000
[ 0.000000] Memory: 61336k/65536k available (2187k kernel code, 4200k reserved, 588k data, 232k init, 0k highmem)
[ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] NR_IRQS:51
[ 0.080000] Calibrating delay loop... 265.42 BogoMIPS (lpj=1327104)
[ 0.080000] pid_max: default: 32768 minimum: 301
[ 0.080000] Mount-cache hash table entries: 512
[ 0.090000] NET: Registered protocol family 16
[ 0.100000] MIPS: machine is TP-LINK TL-WR741ND v4
[ 0.100000] MAC FF:FF:FF:FF:FF:FF
[ 0.100000] MAC 20:59:a0:b1:0f:65
[ 0.560000] bio: create slab at 0
[ 0.560000] Switching to clocksource MIPS
[ 0.570000] NET: Registered protocol family 2
[ 0.570000] TCP established hash table entries: 512 (order: 0, 4096 bytes)
[ 0.580000] TCP bind hash table entries: 512 (order: -1, 2048 bytes)
[ 0.580000] TCP: Hash tables configured (established 512 bind 512)
[ 0.590000] TCP: reno registered
[ 0.590000] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 0.600000] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 0.610000] NET: Registered protocol family 1
[ 0.610000] PCI: CLS 0 bytes, default 32
[ 0.630000] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.630000] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[ 0.640000] msgmni has been set to 119
[ 0.650000] io scheduler noop registered
[ 0.650000] io scheduler deadline registered (default)
[ 0.650000] Serial: 8250/16550 driver, 1 ports, IRQ sharing disabled
[ 0.660000] ar933x-uart: ttyATH0 at MMIO 0x18020000 (irq = 11) is a AR933X UART
[ 0.670000] console [ttyATH0] enabled, bootconsole disabled
[ 0.680000] ath79-spi ath79-spi: master is unqueued, this is deprecated
[ 0.690000] m25p80 spi0.0: found gd25q64, expected m25p80
[ 0.690000] m25p80 spi0.0: gd25q64 (8192 Kbytes)
[ 0.700000] 5 tp-link partitions found on MTD device spi0.0
[ 0.700000] Creating 5 MTD partitions on "spi0.0":
[ 0.710000] 0x000000000000-0x000000020000 : "u-boot"
[ 0.710000] 0x000000020000-0x000000117d80 : "kernel"
[ 0.720000] mtd: partition "kernel" must either start or end on erase block boundary or be smaller than an erase block -- forcing read-only
[ 0.730000] 0x000000117d80-0x0000007f0000 : "rootfs"
[ 0.730000] mtd: partition "rootfs" must either start or end on erase block boundary or be smaller than an erase block -- forcing read-only
[ 0.750000] mtd: partition "rootfs" set to be root filesystem
[ 0.750000] mtd: partition "rootfs_data" created automatically, ofs=0x370000, len=0x480000
[ 0.760000] 0x000000370000-0x0000007f0000 : "rootfs_data"
[ 0.770000] 0x000000020000-0x0000007f0000 : "firmware"
[ 0.770000] 0x0000007f0000-0x000000800000 : "art"
[ 0.790000] libphy: ag71xx_mdio: probed
[ 0.800000] eth0: Atheros AG71xx at 0xba000000, irq 5, mode:GMII
[ 1.350000] eth0: Found an AR7240/AR9330 built-in switch
[ 2.390000] eth1: Atheros AG71xx at 0xb9000000, irq 4, mode:MII
[ 2.940000] ag71xx ag71xx.0 eth1: connected to PHY at ag71xx-mdio.1:04 [uid=004dd041, driver=Generic PHY]
[ 2.950000] TCP: cubic registered
[ 2.950000] NET: Registered protocol family 17
[ 2.960000] 8021q: 802.1Q VLAN Support v1.8
[ 2.970000] VFS: Mounted root (squashfs filesystem) readonly on device 31:2.
[ 2.980000] Freeing unused kernel memory: 232K (80316000 - 80350000)
[ 5.800000] usbcore: registered new interface driver usbfs
[ 5.810000] usbcore: registered new interface driver hub
[ 5.810000] usbcore: registered new device driver usb
[ 5.820000] usbcore: registered new interface driver bitmain
[ 5.830000] hash ok
[ 5.830000] hashtest OK
[ 5.830000] bitmain-asic: success to register device
[ 5.840000] usbcore: registered new interface driver bitmainbl
[ 5.850000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 5.850000] ehci-platform: EHCI generic platform driver
[ 5.860000] ehci-platform ehci-platform: EHCI Host Controller
[ 5.860000] ehci-platform ehci-platform: new USB bus registered, assigned bus number 1
[ 5.870000] ehci-platform ehci-platform: irq 3, io mem 0x1b000000
[ 5.900000] ehci-platform ehci-platform: USB 2.0 started, EHCI 1.00
[ 5.900000] hub 1-0:1.0: USB hub found
[ 5.900000] hub 1-0:1.0: 1 port detected
[ 6.230000] usb 1-1: new high-speed USB device number 2 using ehci-platform
[ 6.380000] hub 1-1:1.0: USB hub found
[ 6.380000] hub 1-1:1.0: 2 ports detected
[ 6.670000] usb 1-1.1: new full-speed USB device number 3 using ehci-platform
[ 6.800000] bitmain 1-1.1:1.0: USB Bitmain asic device now attached to USB Bitmain asic-0
[ 6.810000] PIC microchip usb OK
[ 10.560000] jffs2: notice: (327) jffs2_build_xattr_subsystem: complete building xattr subsystem, 25 of xdatum (0 unchecked, 24 orphan) and 41 of xref (0 dead, 26 orphan) found.
[ 12.850000] hidraw: raw HID events driver (C) Jiri Kosina
[ 12.860000] Loading modules backported from Linux version master-2013-06-27-0-gdcfa6d5
[ 12.860000] Backport generated by backports.git backports-20130617-4-ge3220f5
[ 12.880000] nf_conntrack version 0.5.0 (962 buckets, 3848 max)
[ 12.900000] usbcore: registered new interface driver usbhid
[ 12.910000] usbhid: USB HID core driver
[ 12.920000] usbcore: registered new interface driver usbserial
[ 12.920000] usbcore: registered new interface driver usbserial_generic
[ 12.930000] usbserial: USB Serial support registered for generic
[ 12.960000] xt_time: kernel timezone is -0000
[ 12.980000] cfg80211: Calling CRDA to update world regulatory domain
[ 12.990000] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 13.000000] cfg80211: World regulatory domain updated:
[ 13.000000] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 13.010000] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 13.010000] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 13.020000] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 13.030000] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 13.040000] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 13.190000] ath: EEPROM regdomain: 0x0
[ 13.190000] ath: EEPROM indicates default country code should be used
[ 13.190000] ath: doing EEPROM country->regdmn map search
[ 13.190000] ath: country maps to regdmn code: 0x3a
[ 13.190000] ath: Country alpha2 being used: US
[ 13.190000] ath: Regpair used: 0x3a
[ 13.190000] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[ 13.210000] cfg80211: Calling CRDA for country: US
[ 13.210000] cfg80211: Regulatory domain changed to country: US
[ 13.220000] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 13.230000] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2700 mBm)
[ 13.240000] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 1700 mBm)
[ 13.240000] cfg80211: (5250000 KHz - 5330000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 13.250000] cfg80211: (5490000 KHz - 5600000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 13.260000] cfg80211: (5650000 KHz - 5710000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 13.270000] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 3000 mBm)
[ 13.290000] ieee80211 phy0: Atheros AR9330 Rev:1 mem=0xb8100000, irq=2
[ 17.810000] device eth0 entered promiscuous mode
[ 21.260000] eth1: link up (100Mbps/Full duplex)
[ 23.040000] bitmain 1-1.1:1.0: USB Bitmain asic #0 now disconnected
[663248.860000] bitmain 1-1.1:1.0: USB Bitmain asic device now attached to USB Bitmain asic-0
[663248.870000] PIC microchip usb OK
[663251.310000] bitmain 1-1.1:1.0: USB Bitmain asic #0 now disconnected
