** Changed in: debian-installer (Debian)
Status: Unknown => New
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https://bugs.launchpad.net/bugs/1485057
Title:
"lsusb -v" as root freezes the kernel on Acer ES1-111
** Bug watch added: Debian Bug tracker #794410
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=794410
** Also affects: debian-installer (Debian) via
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=794410
Importance: Unknown
Status: Unknown
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Installing Xubuntu 15.04 to boot in UEFI non-secure mode has some
challenges of it's own. But once I got the system working, it doesn't
freeze anymore.
If you want to use legacy BIOS mode, you'll have to compile a kernel.
However, it is not necessary to apply the patch above. Just disable the
USB
The cause of the freeze seems to be a BIOS problem, as Alan suggested on
the linux-usb mailing list. When booting in UEFI mode (from a Xubuntu
15.04 installation medium), three of the devices listed by lspci are
missing, compared to legacy BIOS mode. One of those is the device that
caused the freez
** Attachment added: "output of lspci when booting in legacy BIOS mode"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1485057/+attachment/4474852/+files/lspci-legacy.txt
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contents of /sys/kernel/debug/usb/ehci/:00:1d.0/registers before unbinding:
bus pci, device :00:1d.0
EHCI Host Controller
EHCI 1.00, rh state running
ownership 0001
SMI sts/enable 0xc008
structural params 0x0028
capability params 0x00036881
status 6008 Periodic Recl FLR
command
contents of /sys/kernel/debug/usb/ehci/:00:1d.0/registers before unbinding
the bus which triggers the freeze:
bus pci, device :00:1d.0
EHCI Host Controller
EHCI 1.00, rh state suspended
ownership 0101 linux
SMI sts/enable 0xe000
structural params 0x0028
capability params 0x0003
I removed the bios-outdated tag. The guy who wrote about his BIOS update
in comment #9 has a completely different problem and commented off-
topic.
** Tags removed: bios-outdated-1.13
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** Tags added: bios-outdated-1.13
** Tags added: bisect-done
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Title:
"lsusb -v" as root freezes the kernel on Acer ES1-111; also fr
Current state of things: I've tracked down the code line where the
freeze happens. It's in function ehci_halt within file ehci-hcd.c. The
function is executed on shutdown as well as when the usb devices on the
bus are about to be probed again. The latter is triggered by "lsusb -v"
as root. Apparent
For the records, here's a screenshot (photo) of the system after a freeze.
Series of actions to get there:
1. enable kernel debug output
2. detach external mouse, to verify that messages appear
3. hit enter to get a new prompt line
4. trigger the freeze with "lsusb -v"
lsusb prints the name of the
** Attachment added: "photo of the virtual terminal after the freeze"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1485057/+attachment/4458832/+files/screenshot-freeze.JPG
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Sorry, the link in comment #14 is nonsense, a paste error.
The new way to trigger a freeze is:
echo :00:1d.0 >/sys/bus/pci/drivers/ehci-pci/unbind
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Sorry, the link in comment #14 is nonsense, a paste error.
The new way to trigger a freeze is:
echo :00:1d.0 >/sys/bus/pci/drivers/ehci-pci/unbind
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As suggested by Alan Stone on the linux-usb mailing list, I've verified
that the "USB cable is bad" messages are caused by the order in which
the USB devices are initialized.
I've also found a new way of triggering the freeze on a bad kernel:
https://bugs.freedesktop.org/show_bug.cgi?id=76935#c1
The previous log for the "bad" kernel was incomplete, due to kernel
buffer overflows caused by systemd output. I've switched that off as
explained here: https://bugs.freedesktop.org/show_bug.cgi?id=76935#c1
** Bug watch added: freedesktop.org Bugzilla #76935
https://bugs.freedesktop.org/show_b
Valentine, your problem is almost certainly not related to the one I reported
here.
You should seek advice in forums or on mailing lists for your computer and/or
distribution.
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As suggested on the linux.usb mailing list, I've added some additional debug
print statements to the first bad kernel. They are not triggered by "lsusb -v"
though. I'm attaching kernel debug output from the boot sequence of two kernels:
- the bad one, with additional print statements
- the last g
** Attachment added: "last good kernel"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1485057/+attachment/4456919/+files/dmesg.good.full.txt
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I use Acer Aspire ES1-511. Installed Xubuntu 14.04.01 and he's work
perfect.
But...
At the start of a LiveUSB and install version 4.14.02 or older (and 15.04)
observed a problem with the power off and reboot the notebook.
After a BIOS update from version 1.03 to 1.09, the problem persists, but
b
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