Ticket #887 (closed defect: worksforme)

Opened 12 years ago

Last modified 2 years ago

U-Boot initialization race condition: Hangs on boot

Reported by: mickey@… Owned by: willie_chen@…
Priority: lowest Milestone:
Component: u-boot Version: unspecified
Severity: blocker Keywords:
Cc: buglog@…, werner@…, cw@…, olv@…, john_lee@…, andy@… Blocked By:
Blocking: Estimated Completion (week):
HasPatchForReview: PatchReviewResult:
Reproducible:

Description

Confirmed on different GTA01Bv4 w/ recent U-Boot versions. Bug has been
introduced sometimes after the August Snapshot. It works fine when you enter the
U-Boot boot menu -- which is why I suspect a race condition when initializing.

Attachments

om887-workaround.patch (595 bytes) - added by mail@… 11 years ago.
Patch

Change History

comment:1 Changed 12 years ago by cw@…

  • Cc cw@… added

comment:2 Changed 12 years ago by mwester@…

The latest uboot version boots fine with USB attached; but fails to boot
directly from the power button if the USB cable is not attached (as noted, if
you go into the menu first, then select boot, it works ok). Reverting to the
2007.08 version of uboot resolves this issue.

comment:3 Changed 12 years ago by olv@…

  • Cc olv@… added

comment:4 Changed 12 years ago by laforge@…

  • Status changed from new to assigned

This actually seems like it is a kernel problem. If I enable the u-boot serial
console and boot, u-boot loads the kernel just fine but I get the following
kernel oops:

U-Boot 1.3.0-rc11.2.0+git20070917+svnr2943 (Sep 17 2007 - 23:42:04)

DRAM: 128 MB
NAND: 64 MiB
Found Environment offset in OOB..
Video: 640x480x8 31kHz 59Hz

NAND read: device 0 offset 0x244000, size 0x5000

20480 bytes read: OK

USB: S3C2410 USB Deviced
In: serial
Out: serial
Err: serial
Hit any key to stop autoboot: 0

NAND read: device 0 offset 0x44000, size 0x200000

2097152 bytes read: OK

## Booting image at 32000000 ...

Image Name: OpenMoko?/2.6.22.5-moko11+svnr293
Created: 2007-10-25 13:29:59 UTC
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 1617948 Bytes = 1.5 MB
Load Address: 30008000
Entry Point: 30008000
Verifying Checksum ... OK

OK

Starting kernel ...

Uncompressing
Linux.........................................................................................................
done, b
ooting the kernel.
Linux version 2.6.22.5-moko11 (oe@…) (gcc version 4.1.2) #1
PREEMPT Thu Oct 25 13:17:24 UTC 2007
CPU: ARM920T [41129200] revision 0 (ARMv4T), cr=c0007177
Machine: GTA01
Memory policy: ECC disabled, Data cache writeback
On node 0 totalpages: 32768

DMA zone: 256 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 32512 pages, LIFO batch:7
Normal zone: 0 pages used for memmap

CPU S3C2410A (id 0x32410002)
S3C2410: core 266.000 MHz, memory 133.000 MHz, peripheral 66.500 MHz
S3C24XX Clocks, (c) 2004 Simtec Electronics
CLOCK: Slow mode (1.500 MHz), fast, MPLL on, UPLL on
CPU0: D VIVT write-back cache
CPU0: I cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets
CPU0: D cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets
Built 1 zonelists. Total pages: 32512
Kernel command line: rootfstype=jffs2 root=/dev/mtdblock4 console=ttySAC0,115200
console=tty0 loglevel=8 regular_boot mtdparts=neo19
73-nand:0x00040000(u-boot),0x00004000(u-boot_env),0x00200000(kernel),0x000a0000(splash),0x03d1c000(rootfs)
irq: clearing pending ext status 000002a0
irq: clearing pending ext status 00000280
irq: clearing subpending status 00000002
PID hash table entries: 512 (order: 9, 2048 bytes)
timer tcon=00500000, tcnt d877, tcfg 00000200,00000000, usec 00001719
Console: colour dummy device 80x30
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 128MB = 128MB total
Memory: 126464KB available (3008K code, 260K data, 120K init)
Calibrating delay loop... 132.71 BogoMIPS (lpj=331776)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
NET: Registered protocol family 16
kernel BUG at mm/slab.c:2980!
Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = c0004000
[00000000] *pgd=00000000
Internal error: Oops: 805 #1 PREEMPT
Modules linked in:
CPU: 0 Not tainted (2.6.22.5-moko11 #1)
PC is at bug+0x20/0x2c
LR is at vprintk+0x354/0x404
pc : [<c002b56c>] lr : [<c00419b0>] psr: 40000093
sp : c04a9cc8 ip : c04a9c30 fp : c04a9cd4
r10: 0000001d r9 : 000000d0 r8 : c04781a0
r7 : 00000000 r6 : c04ab0b8 r5 : c0477400 r4 : c0476da0
r3 : 00000000 r2 : c04a8000 r1 : 00000001 r0 : 00000021
Flags: nZcv IRQs off FIQs on Mode SVC_32 Segment kernel
Control: c000717f Table: 30004000 DAC: 00000017
Process khelper (pid: 7, stack limit = 0xc04a8260)
Stack: (0xc04a9cc8 to 0xc04aa000)
9cc0: c04a9d14 c04a9cd8 c0088768 c002b55c c03147f0 c04a8000
9ce0: 00000010 00000020 c0314818 000000d0 c04781a0 60000013 c04826e4 c0341fb0
9d00: c04a9da4 c04a9db0 c04a9d34 c04a9d18 c0088618 c0088640 c0341fac 00000000
9d20: c04a9da4 c0481be0 c04a9d5c c04a9d38 c009f524 c00885d0 00000000 c04826e4
9d40: c0481be0 c0481c4c c04a9ee0 c04a9db0 c04a9d94 c04a9d60 c0094050 c009f510
9d60: c031492c c04747a0 c03229c0 c04a9ee0 00000107 c0481be0 c04826e4 00000000
9d80: c04a8000 c04a9f70 c04a9de4 c04a9d98 c0095acc c0093fc8 c0326632 00000101
9da0: 00000000 01c000e1 00000004 c032662d 00000000 000000d0 c0322c3c c04a73c0
9dc0: c04a9ee0 c04747a0 c04826e4 c032662c 00000000 c04a9f70 c04a9e5c c04a9de8
9de0: c0096794 c0095700 c04826e4 c04747a0 c0314c7c c0263cc4 c0314c8c 00000101
9e00: 00000001 00000000 c0314cac c0263ef8 c0314cc0 000000d0 40000013 c0358540
9e20: c04a9f44 c04a9f28 c0088de8 00000011 00000000 c04aa9e0 c0478200 c04a73c0
9e40: 00000001 c04a9ee0 c04a9ee0 c032662c c04a9e6c c04a9e60 c0096890 c0096718
9e60: c04a9e9c c04a9e70 c0096cf4 c009687c c04a9e9c c04a9e80 c008d490 ffffff9c
9e80: ffffffe9 00000001 c04a9ee0 c048fe94 c04a9ebc c04a9ea0 c00977f8 c0096a34
9ea0: c04a9ee0 c032662c c047d3a0 c047d3a0 c04a9ed4 c04a9ec0 c00978c8 c00977b4
9ec0: 00000011 00000000 c04a9f44 c04a9ed8 c0090708 c00978b4 00000011 c0263ca0
9ee0: c04826e4 c04747a0 c0314c7c c0263cc4 c0314c8c 00000105 00000001 00000000
9f00: c0314cac c0263ef8 c0314cc0 000000d0 40000013 c0358540 c04a9f44 c04a9f28
9f20: c0088de8 00000011 00000000 c04aa9e0 c04a2600 c032662c c04a9f6c c04a9f48
9f40: c0091cf8 c00906e8 c032662c c048fe94 c047d3a0 c04a9f70 00000000 00000000
9f60: c04a9fd4 c04a9f70 c002a7ac c0091cc8 00000000 00000000 00000000 00000000
9f80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
9fa0: 00000000 00000000 00000000 00000000 00000000 00000000 c04a8000 c04a8000
9fc0: c04768e0 00000000 c04a9ff4 c04a9fd8 c00523ec c002a77c 00000000 00000000
9fe0: 00000000 00000000 00000000 c04a9ff8 c0044234 c00522e4 c0314f24 c027cb74
Backtrace:
[<c002b54c>] (
bug+0x0/0x2c) from [<c0088768>] (cache_alloc_refill+0x138/0x5d8)
[<c0088630>] (cache_alloc_refill+0x0/0x5d8) from [<c0088618>]
(kmem_cache_alloc+0x58/0x70)
[<c00885c0>] (kmem_cache_alloc+0x0/0x70) from [<c009f524>] (d_alloc+0x24/0x1b4)

r6:c0481be0 r5:c04a9da4 r4:00000000

[<c009f500>] (d_alloc+0x0/0x1b4) from [<c0094050>] (do_lookup+0x98/0x18c)
[<c0093fb8>] (do_lookup+0x0/0x18c) from [<c0095acc>] (link_path_walk+0x3dc/0x1018)
[<c00956f0>] (
link_path_walk+0x0/0x1018) from [<c0096794>]
(link_path_walk+0x8c/0x164)
[<c0096708>] (link_path_walk+0x0/0x164) from [<c0096890>] (path_walk+0x24/0x28)

r8:c032662c r7:c04a9ee0 r6:c04a9ee0 r5:00000001 r4:c04a73c0

[<c009686c>] (path_walk+0x0/0x28) from [<c0096cf4>] (do_path_lookup+0x2d0/0x2fc)
[<c0096a24>] (do_path_lookup+0x0/0x2fc) from [<c00977f8>]
(path_lookup_intent_open+0x54/0x90)

r8:c048fe94 r7:c04a9ee0 r6:00000001 r5:ffffffe9 r4:ffffff9c

[<c00977a4>] (path_lookup_intent_open+0x0/0x90) from [<c00978c8>]
(path_lookup_open+0x24/0x2c)

r7:c047d3a0 r6:c047d3a0 r5:c032662c r4:c04a9ee0

[<c00978a4>] (path_lookup_open+0x0/0x2c) from [<c0090708>] (open_exec+0x30/0xd0)
[<c00906d8>] (open_exec+0x0/0xd0) from [<c0091cf8>] (do_execve+0x40/0x1d0)

r5:c032662c r4:c04a2600

[<c0091cb8>] (do_execve+0x0/0x1d0) from [<c002a7ac>] (kernel_execve+0x40/0x88)
[<c002a76c>] (kernel_execve+0x0/0x88) from [<c00523ec>]
(call_usermodehelper+0x118/0x124)

r7:00000000 r6:c04768e0 r5:c04a8000 r4:c04a8000

[<c00522d4>] (call_usermodehelper+0x0/0x124) from [<c0044234>]
(do_exit+0x0/0x898)

r7:00000000 r6:00000000 r5:00000000 r4:00000000

Code: e1a01000 e59f000c eb00593d e3a03000 (e5833000)
note: khelper[7] exited with preempt_count 1

comment:5 Changed 12 years ago by laforge@…

interestingly, the oops backtrace is different every time I boot the device:

Linux version 2.6.22.5-moko11 (oe@…) (gcc version 4.1.2) #1
PREEMPT Thu Oct 25 13:17:24 UTC 2007
CPU: ARM920T [41129200] revision 0 (ARMv4T), cr=c0007177
Machine: GTA01
Memory policy: ECC disabled, Data cache writeback
On node 0 totalpages: 32768

DMA zone: 256 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 32512 pages, LIFO batch:7
Normal zone: 0 pages used for memmap

CPU S3C2410A (id 0x32410002)
S3C2410: core 266.000 MHz, memory 133.000 MHz, peripheral 66.500 MHz
S3C24XX Clocks, (c) 2004 Simtec Electronics
CLOCK: Slow mode (1.500 MHz), fast, MPLL on, UPLL on
CPU0: D VIVT write-back cache
CPU0: I cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets
CPU0: D cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets
Built 1 zonelists. Total pages: 32512
Kernel command line: rootfstype=jffs2 root=/dev/mtdblock4 console=ttySAC0,115200
console=tty0 loglevel=8 regular_boot
mtdparts=neo1973-nand:0x00040000(u-boot),0x00004000(u-boot_env),0x00200000(kernel),0x000a0000(splash),0x03d1c000(rootfs)
irq: clearing pending ext status 000002a0
irq: clearing pending ext status 00000280
irq: clearing subpending status 00000002
PID hash table entries: 512 (order: 9, 2048 bytes)
timer tcon=00500000, tcnt d877, tcfg 00000200,00000000, usec 00001719
Console: colour dummy device 80x30
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 128MB = 128MB total
Memory: 126464KB available (3008K code, 260K data, 120K init)
Calibrating delay loop... 132.71 BogoMIPS (lpj=331776)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
NET: Registered protocol family 16
S3C2410 Power Management, (c) 2004 Simtec Electronics
modem wakeup interrupt
wake enabled for irq 17
S3C2410: Initialising architecture
S3C24XX DMA Driver, (c) 2003-2004,2006 Simtec Electronics
DMA channel 0 at c8800000, irq 33
DMA channel 1 at c8800040, irq 34
DMA channel 2 at c8800080, irq 35
DMA channel 3 at c88000c0, irq 36
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
kernel BUG at mm/slab.c:2980!
Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = c0004000
[00000000] *pgd=00000000
Internal error: Oops: 805 #1 PREEMPT
Modules linked in:
CPU: 0 Not tainted (2.6.22.5-moko11 #1)
PC is at bug+0x20/0x2c
LR is at vprintk+0x354/0x404
pc : [<c002b56c>] lr : [<c00419b0>] psr: 40000093
sp : c048fe48 ip : c048fdb0 fp : c048fe54
r10: 00000008 r9 : 000000d0 r8 : c04b2ea0
r7 : 00000000 r6 : c04cf03c r5 : c04cb080 r4 : c0476260
r3 : 00000000 r2 : c048e000 r1 : 00000001 r0 : 00000021
Flags: nZcv IRQs off FIQs on Mode SVC_32 Segment kernel
Control: c000717f Table: 30004000 DAC: 00000017
Process swapper (pid: 1, stack limit = 0xc048e260)
Stack: (0xc048fe48 to 0xc0490000)
fe40: c048fe94 c048fe58 c0088768 c002b55c c03629c0 c048e000
fe60: 00000010 00000020 c0478c80 000000d0 c04b2ea0 a0000013 00000001 00000002
fe80: 00000000 00000000 c048feb4 c048fe98 c0088618 c0088640 c01ea844 00000000
fea0: c0334234 c04b2ea0 c048fedc c048feb8 c01edf40 c00885d0 00008124 00000000
fec0: c0334234 00000006 c0498740 00000001 c048ff04 c048fee0 c023f8c4 c01edf20
fee0: 00000000 c0334d2c c034ec6c c0498740 00000006 c0350ea4 c048ff2c c048ff08
ff00: c01ebeb0 c023f740 c0350ea4 00000000 c0021894 00000000 c048e000 00000000
ff20: c048ff44 c048ff30 c01ebfc0 c01ebd58 00000001 00000000 c048ff5c c048ff48
ff40: c021ea10 c01ebfb4 c0334df8 00000000 c048ff6c c048ff60 c001f794 c021e9fc
ff60: c048ff84 c048ff70 c001fbc4 c001f784 c0022404 00000000 c048fff4 c048ff88
ff80: c0008938 c001fad4 c048ffac 00000001 c003d67c c003c310 00000000 00000000
ffa0: 00000000 c048ffb0 c0026fa4 c003d600 00000000 00000000 c000887c c0044234
ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ffe0: 00000000 00000000 00000000 c048fff8 c0044234 c000888c 25207325 2520756c
Backtrace:
[<c002b54c>] (
bug+0x0/0x2c) from [<c0088768>] (cache_alloc_refill+0x138/0x5d8)
[<c0088630>] (cache_alloc_refill+0x0/0x5d8) from [<c0088618>]
(kmem_cache_alloc+0x58/0x70)
[<c00885c0>] (kmem_cache_alloc+0x0/0x70) from [<c01edf40>] (sk_alloc+0x30/0x11c)

r6:c04b2ea0 r5:c0334234 r4:00000000

[<c01edf10>] (sk_alloc+0x0/0x11c) from [<c023f8c4>] (inet_create+0x194/0x324)

r8:00000001 r7:c0498740 r6:00000006 r5:c0334234 r4:00000000

[<c023f730>] (inet_create+0x0/0x324) from [<c01ebeb0>] (sock_create+0x168/0x25c)
[<c01ebd48>] (sock_create+0x0/0x25c) from [<c01ebfc0>]
(sock_create_kern+0x1c/0x24)
[<c01ebfa4>] (sock_create_kern+0x0/0x24) from [<c021ea10>]
(inet_csk_ctl_sock_create+0x24/0x70)
[<c021e9ec>] (inet_csk_ctl_sock_create+0x0/0x70) from [<c001f794>]
(tcp_v4_init+0x20/0x38)

r5:00000000 r4:c0334df8

[<c001f774>] (tcp_v4_init+0x0/0x38) from [<c001fbc4>] (inet_init+0x100/0x300)
[<c001fac4>] (inet_init+0x0/0x300) from [<c0008938>] (kernel_init+0xbc/0x284)

r5:00000000 r4:c0022404

[<c000887c>] (kernel_init+0x0/0x284) from [<c0044234>] (do_exit+0x0/0x898)
Code: e1a01000 e59f000c eb00593d e3a03000 (e5833000)
Kernel panic - not syncing: Attempted to kill init!

comment:6 Changed 12 years ago by laforge@…

mh, this might actually be related to #874, since at least the current
snapshots seem to boot using the kernel uncompressor.

comment:7 Changed 12 years ago by laforge@…

this is really weird. It seems to boot reliably when bootdelay is set to 5.
I'll further investigate

comment:8 Changed 12 years ago by willie_chen@…

  • Status changed from assigned to new
  • Owner changed from laforge@… to michael@…

comment:9 Changed 12 years ago by willie_chen@…

  • Owner changed from michael@… to willie_chen@…

comment:10 Changed 12 years ago by mickey@…

  • Priority changed from high to lowest
  • Severity changed from normal to blocker

bumping this to Überpriority, Megablocker to raise some attention...

comment:11 Changed 12 years ago by andy@…

  • Cc andy@… added

comment:12 Changed 12 years ago by andy@…

  • Status changed from new to assigned

comment:13 Changed 12 years ago by mail@…

I can add some information to this (not sure if it's more relevant here or for
#874, so I'm picking the one with the higher priority).

Using my own builds (with MokoMakefile?) of:
uImage-2.6.22.5-moko11+svnr3238-r10-neo1973.bin
u-boot-gta01bv4-1.3.0+git20071214+svnr3648-1.bin

my Neo does not hang on boot _if_ I have the u-boot stdin/stdout/stderr set to
"serial". If they are set to "usbtty" then the Neo hangs at the u-boot splash
screen. Booting through the "Aux" menu always works.

This was tested with no debug-board or USB cable connected to the Neo. In my
earlier debug-board testing with these software versions, I never saw any of the
"oops" messages mentioned in this bug report (regardless of which console I used).

My u-boot environment is shown below.
GTA01Bv4 # printenv
bootcmd=setenv bootargs ${bootargs_base} ${mtdparts}; nand read.e 0x32000000
kernel; bootm 0x32000000
baudrate=115200
usbtty=cdc_acm
mtdids=nand0=neo1973-nand
bootargs=rootfstype=jffs2 root=/dev/mtdblock4 console=ttySAC0,115200
console=tty0 loglevel=8
mtdparts=mtdparts=neo1973-nand:0x00040000(u-boot),0x00004000(u-boot_env),0x00200000(kernel),0x000a0000(splash),0x03d1c000(rootfs)
splashimage=nand read.e 0x32000000 splash;unzip 0x32000000 0x33d00000
bootargs_base=rootfstype=jffs2 root=/dev/mtdblock4 console=tty0 loglevel=8
quiet=1
bootdelay=10
menu_2=SerConsole:setenv stdin serial;setenv stdout serial;setenv stderr
serial;saveenv
menu_3=USBConsole:setenv stdin usbtty;setenv stdout usbtty;setenv stderr
usbtty;saveenv
menu_4=ForceChg:neo1973 charger fast
menu_5=Poweroff:neo1973 power-off
menu_1=SDBoot:setenv bootargs console=tty0 loglevel=8 rootdelay=5
root=/dev/mmcblk0p1 ${mtdparts};mmcinit;ext2load mmc 0 0x32000000 /uImage;bootm
0x32000000
stdin=usbtty
stdout=usbtty
stderr=usbtty
partition=nand0,0
mtddevnum=0
mtddevname=u-boot
pcf50606_int1=0x4a

Environment size: 1060/16380 bytes

comment:14 Changed 11 years ago by sagacis@…

I have the same problem. I can only boot from the u-boot menu.

I tried bootdelay 5, but that didn't help. Here are my settings:

baudrate=115200
bootcmd=setenv bootargs ${bootargs_base} ${mtdparts}; nand read.e 0x32000000
kernel; bootm 0x32000000
menu_1=Set console to USB: setenv stdin usbtty; setenv stdout usbtty; setenv
stderr usbtty
menu_2=Set console to serial: setenv stdin serial; setenv stdout serial; setenv
stderr serial
menu_3=Power off: neo1973 power-off
mtdids=nand0=neo1973-nand
mtdparts=mtdparts=neo1973-nand:0x00040000(u-boot),0x00004000(u-boot_env),0x00200000(kernel),0x000a0000(splash),0x03d1c000(rootfs)
quiet=1
splashimage=nand read.e 0x32000000 splash 0x5000; unzip 0x32000000 0x33d00000
0x96000
usbtty=cdc_acm
menu_6=Autofast-Charge and Backlight Off: neo1973 charger autofast; neo1973
backlight off
menu_7=Force Fast Charge and Backlight Off: neo1973 charger fast;neo1973
backlight off
sd_image_name=zImage
boot_menu_timeout=65000
bootargs=root=/dev/mmcblk0p1 rootdelay=5 console=ttySAC0,115200 console=tty0
loglevel=8
mtdparts=neo1973-nand:0x00040000(u-boot),0x00004000(u-boot_env),0x00200000(kernel),0x000a0000(splash),0x03d1c000(rootfs)
menu_4=Boot from SD: setenv bootargs root=/dev/mmcblk0p1 rootdelay=5
console=ttySAC0,115200 console=tty0 loglevel=8 ${mtdparts}; mmcinit; ext2load
mmc 0 0x32000000 /boot/${s_image_name}; bootm 0x32000000
bootargs_base=rootfstype=jffs2 root=/dev/mtdblock4 console=ttySAC0,115200
console=tty0 loglevel=8 psplash=false
partition=nand0,0
mtddevnum=0
mtddevname=u-boot
pcf50606_int1=0x4a
stdin=usbtty
stdout=usbtty
stderr=usbtty
bootdelay=5

comment:15 Changed 11 years ago by sagacis@…

I set "boot_menu_timeout" to 5. Now I boot normally, after showing the splash
screen for five seconds. Prior to that, I had the boot_menu_timeout set to
65000 to keep it from timing out and shutting down in the early days.

Changed 11 years ago by mail@…

Patch

comment:16 Changed 11 years ago by mickey@…

That doesn't fix it here on my 01Bv4.

comment:17 Changed 11 years ago by mickey@…

actually, it makes it worse. When I apply this patch, it no longer boots at all,
neither with USB connected nor without.

comment:18 Changed 11 years ago by john_lee@…

also confirmed on gta02v4.

std*=usbtty + usb attached = success
std*=usbtty + no usb = fail
std*=serial = always success

comment:19 Changed 11 years ago by john_lee@…

  • Cc john_lee@… added

comment:20 Changed 11 years ago by mickey@…

John, does the patch fix it for you on gta02v4?

comment:21 Changed 11 years ago by werner@…

  • Status changed from assigned to closed
  • Cc werner@… added
  • Resolution set to worksforme

I've committed a slight variation of the patch in r3776, along with some
explanations of what's happening. Thanks !

This solved the problem for me (tested on GTA01Bv4).

comment:22 Changed 2 years ago by Kennescoma

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