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[bug #36740] FTDI USB Serial Device not recognized and "insmod ehci" fre
From: |
Horst Prote |
Subject: |
[bug #36740] FTDI USB Serial Device not recognized and "insmod ehci" freezes grub |
Date: |
Wed, 27 Jun 2012 16:36:48 +0000 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:10.0.4) Gecko/20100101 Firefox/10.0.4 |
URL:
<http://savannah.gnu.org/bugs/?36740>
Summary: FTDI USB Serial Device not recognized and "insmod
ehci" freezes grub
Project: GNU GRUB
Submitted by: prote
Submitted on: Mi 27 Jun 2012 18:36:47 CEST
Category: None
Severity: Major
Priority: 5 - Normal
Item Group: Software Error
Status: None
Privacy: Public
Assigned to: None
Originator Name:
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release:
Release: Bazaar - trunk
Reproducibility: Every Time
Planned Release: None
_______________________________________________________
Details:
My aim is to have grub terminal over serial line but as the mainboard has no
serial connector I bought an USB-Serial dongle but it is not recognized by
"usb" on grub command line. Even after
insmod uhci
or
insmod ohci
the "usb" command still lists no device.
When I enter
insmod ehci
grub freezes. So I repeated this with a prior "set debug=ehci" and got fast
scrolling debug messages which seem to repeat themselves in an endless loop.
Once I let this running for 3:30 minutes before pressing the reset button.
Unfortunately without a serial console I can't copy the messages to a file. I
tried to shoot some pictures/movies but the photo camera didn't catch
everything and the video camera has only 25 fps. Shall I attach them
nonetheless?
I'll attach my transcript of some lines.
When the system is booted the agetty on ttyUSB0 works fine though.
System is gentoo, amd64 with grub-9999 (which is revision 4532 from bzr) and
USE flags for grub_platforms_efi-64 and device-mapper.
# lsusb | grep USB-Serial
Bus 002 Device 004: ID 0403:6001 Future Technology Devices International, Ltd
FT232 USB-Serial (UART) IC
# cat /proc/tty/driver/usbserial
usbserinfo:1.0 driver:2.0
0: name:"FTDI USB Serial Device" vendor:0403 product:6001 num_ports:1 port:1
path:usb-0000:00:1d.0-1.5
The mainboard is an Asus P8P67 DELUXE.
_______________________________________________________
File Attachments:
-------------------------------------------------------
Date: Mi 27 Jun 2012 18:36:47 CEST Name: transcript.txt Size: 10kB By:
prote
Video/Photo transcript of ehci debug messages
<http://savannah.gnu.org/bugs/download.php?file_id=26115>
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?36740>
_______________________________________________
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- [bug #36740] FTDI USB Serial Device not recognized and "insmod ehci" freezes grub,
Horst Prote <=