[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1904953
Well, the hub really didn't detect anything. And apparently adding delay
after hub powered on doesn't help.
Let's just disable runtime suspend for this device.
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
Using the kernel from comment 10, I did not observe an improvement: the
devices connected to the hub aren't detected as often as before,
requiring the same workaround.
** Attachment added: "Two dmesg with the test kernel"
Please test kernel here:
https://people.canonical.com/~khfeng/lp1904953/
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1904953
Title:
USB2.0 HUB only works after an USB device is connected
To
Here are two dmesg with the arguments added. On first dmesg I connected
the USB hub 3 times. The two devices connected to the hub were:
045e:00cb Microsoft Corp. Basic Optical Mouse v2.0
25a7:fa23 Compx 2.4G Receiver
On the first attempt, all devices were detected. On the second and third
Ok, please boot v5.10-rc4 kernel with parameter "dyndbg='file
drivers/usb/core/* +p; file drivers/usb/host/* +p' log_buf_len=16M",
reproduce the issue, and attach dmesg here.
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
Using 5.10-rc4, the same problem was observed
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1904953
Title:
USB2.0 HUB only works after an USB device is connected
To manage notifications about this
Please test latest mainline kernel:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.10-rc4/amd64/
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
Disabling the autosuspend from the USB device fixed the problem.
However, I did not want to disable it for all USB devices, so I added an
udev rule:
ACTION=="add", SUBSYSTEM=="usb", ATTRS{idVendor}=="214b",
ATTR{idProduct}=="7000", ATTR{product}=="USB2.0 HUB",
TEST=="power/control",
This looks the same as
https://ubuntuforums.org/archive/index.php/t-2330904.html
In summary, this is caused by USB power-saving, and this can be disabled
by kernel parameter "usbcore.autosuspend"
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed
You can also use powertop to disable USB autosuspend in runtime, but it
must be done every time you reboot the compuer
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1904953
Title:
USB2.0 HUB only
11 matches
Mail list logo
