Triaging this as high matching bug 1958224.
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https://bugs.launchpad.net/bugs/1990189
Title:
brlttty claiming CH341 usbtty device blocking access
Status in brltty
This has been fixed in mantic, and the following needs to be cherry-
picked to 22.04:
# Device: 1A86:7523
+# Generic Identifier
+# Vendor: Jiangsu QinHeng, Ltd.
+# Product: CH341 USB Bridge Controller
# Baum [NLS eReader Zoomax (20 cells)]
-ENV{PRODUCT}=="1a86/7523/*",
This bug affects me while trying to program an ESP32 device from
Arduino. Uninstalling brltty solves it.
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https://bugs.launchpad.net/bugs/1990189
Title:
brlttty claiming
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: brltty (Ubuntu)
Status: New => Confirmed
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Hi,
On 28-10-2022 16:43, storepeter wrote:
> I recomend removing the entry from /lib/udev/rules.d/85-brltty.rules
>
> Now I found this bug report this is what I did, and should be good until
> the system decides to update that file and put it back again.
I *think* that if you copy your modified
Glad I found this bug report.
The USB-id 1a86/7523 is used by CH340 based USB-serial ports,
which is what is used on Chinese Arduino and many rs485 USB adapters,
and a lot of other stuff, certainly much more general use than just brltty
I would argue that there are plenty more people using one
** Changed in: brltty (Ubuntu)
Importance: Undecided => Low
** Description changed:
While this problem seems to have been fixed for FTDI and CP210 based
devices CH340/CH341 based (and possibly other USB serial adapters) are
unusable except by brltty.
+
+ Workaround: disable brltty
+
no such file as *brltty.rules" in my udev. What I did that seems to work
is:
sudo systemctl stop brltty-udev.service
sudo systemctl mask brltty-udev.service
sudo systemctl stop brltty.service
sudo systemctl disable brltty.service
Not sure if this is best or even a good idea but at least it stops
Hello,
beattie, le mar. 20 sept. 2022 15:21:36 -, a ecrit:
> can't find anything in the udev,
That's be in ./lib/udev/rules.d/85-brltty.rules, this line:
ENV{PRODUCT}=="1a86/7523/*", ENV{BRLTTY_BRAILLE_DRIVER}="bm",
GOTO="brltty_usb_run"
> I think somebody did not do their testing.
Not
can't find anything in the udev, removing brltty breaks some
dependencies. Braille is good an all but I think somebody did not do
their testing.
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The simple workaround is to remove the package, or remove the entry from
the udev file.
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https://bugs.launchpad.net/bugs/1990189
Title:
brlttty claiming CH341 usbtty
is there a work around?
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https://bugs.launchpad.net/bugs/1990189
Title:
brlttty claiming CH341 usbtty device blocking access
Status in brltty package in Ubuntu:
New
Ok. That'd be tricky to filter. Fortunately with brltty 6.5 such generic
entries are kept apart so that they can be packaged separately.
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** Attachment added: "output of lsusb"
https://bugs.launchpad.net/ubuntu/+source/brltty/+bug/1990189/+attachment/5617194/+files/lsusb
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