no USB, no network on 512 MB device

[scruss]

Just got a new 512 MB Raspberry Pi, a Made-in-China unit from Element 14/Newark. Doesn't respond to keyboard, and no LNK activity during boot. It does most of the normal things you'd expect during boot: the colour splash, the kernel messages, the raspi-config screen, but USB does nothing.

It's currently connected to this machine through a USB serial link to the UART on the GPIO. PWR light is on, and ACT blinks whenever there's filesystem access. FDX, LNK and 100 LEDs do nothing, even with network cable attached. TP2-TP1 voltage steady at 5.10 V.

Things I have tried, to no avail:

• alternative known-good power supply
• USB through powered hub (lsusb reports no change, no additional devices)
• different USB keyboard
• different network cable/connection
• known-good SD card
• USB/network chip is not warm
• 25 MHz crystal on back of board looks to have small, neat solder joints
• device is a perfectly able to run as a standalone device through a serial terminal, with no untoward messages in the syslog.

Here's the boot log, captured with screen: http://scruss.com/pi-no_usb_or_network-log.txt
(pastebin isn't working for me this morning)

/proc/cpuinfo:

Processor : ARMv6-compatible processor rev 7 (v6l)
BogoMIPS : 697.95
Features : swp half thumb fastmult vfp edsp java tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xb76
CPU revision : 7

Hardware : BCM2708
Revision : 000f
Serial : 000000006db____8 (anonymised)

free:

Code: Select all

             total       used       free     shared    buffers     cached
Mem:        448996      76752     372244          0      33128      22772
-/+ buffers/cache:      20852     428144
Swap:       102396          0     102396

uname -a (running Raspbian 2012-10-18):

Linux raspberrypi 3.2.27+ #250 PREEMPT Thu Oct 18 19:03:02 BST 2012 armv6l GNU/Linux

Could I have a broken Raspberry Pi? What else, if anything, should I try, please?

[scruss]

Got a replacement, and decided to run the same console log test and compare the difference. The log only showed real differences in two areas, with additional lines shown with a leading '+':

Code: Select all

 [    2.085412] VFP support v0.3: implementor 41 architecture 1 part 20 variant b rev 5
+[    2.099503] Indeed it is in host mode hprt0 = 00021501
 [    2.112114] registered taskstats version 1
 [    2.133125] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
 [    2.153547] Waiting for root device /dev/mmcblk0p2...
 [    2.173388] mmc0: new high speed SDHC card at address b368
 [    2.193016] mmcblk0: mmc0:b368 SDC   30.2 GiB
 [    2.214345]  mmcblk0: p1 p2
+[    2.333055] usb 1-1: new high-speed USB device number 2 using dwc_otg
+[    2.342016] Indeed it is in host mode hprt0 = 00001101
+[    2.543259] usb 1-1: New USB device found, idVendor=0424, idProduct=9512
+[    2.552288] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
+[    2.562623] hub 1-1:1.0: USB hub found
+[    2.568869] hub 1-1:1.0: 3 ports detected
+[    2.853133] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
+[    2.963547] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00
+[    2.972755] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
+[    2.985582] smsc95xx v1.0.4
+[    3.048487] smsc95xx 1-1.1:1.0: eth0: register 'smsc95xx' at usb-bcm2708_usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:e3:f0:8f
 [    7.369499] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)

So, it looks like the faulty board just wasn't finding the USB and Ethernet chip ...