With the input provided above I did some more technical digging; steep learning curve so ;)
Seems like really the CH430G on the board in question has an issue with power supply. Connectivity works on a Mac perfect and on other different hardware (running Linux) it is not working. The later varies from kernel messages like above until no information at all that the device is plugged into USB (knowing that the particular hardware is very strict on providing power via USB only within the specification; also USB-disks fail without additional power supply). Another test with bypassing the CHG340 connecting the ESP8266 via "flying wiring" to a different UART (FT232) does work. The board (processor) itself is working fine. This is not a prove that the CHG430 on the board is broken but it shows it is not a driver issue from my point of view. Proposal to close this bug. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1915661 Title: WDH - CH340G USB UART not supported by ch341 driver in all chip revisions Status in linux package in Ubuntu: Confirmed Bug description: Hi, the USB UART chip CHG340G is used by many developer ESP2866 boards to connect to USB serial. The standard kernel driver des support a lot of those CH340x chipset but it does currently not support the WDH CH340g with standard ch341 driver. Nevertheless there exists a working driver from the vendor since yaers. http://www.wch.cn/downloads/CH341PAR_LINUX_ZIP.html https://sparks.gogo.co.nz/assets/_site_/downloads/CH340_LINUX.zip https://sparks.gogo.co.nz/ch340.html Is it possable to get the mainlaine driver updated to support CHG340G out of the box without patching recompiling custom kernel. There are milions of CH340g chips on those ESP2866 boards out there. ProblemType: Bug DistroRelease: Ubuntu 20.10 Package: linux-image-5.8.0-43-generic 5.8.0-43.49 ProcVersionSignature: Ubuntu 5.8.0-43.49-generic 5.8.18 Uname: Linux 5.8.0-43-generic x86_64 ApportVersion: 2.20.11-0ubuntu50.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: christian 1412 F.... pulseaudio christian 1416 F.... pipewire-media- /dev/snd/seq: christian 1411 F.... pipewire CasperMD5CheckResult: skip CurrentDesktop: KDE Date: Sun Feb 14 22:23:38 2021 InstallationDate: Installed on 2018-11-27 (810 days ago) InstallationMedia: Kubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.2) MachineType: LENOVO 4349WJK ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.8.0-43-generic root=UUID=980616fe-1ce0-41c1-b148-e64e68fdcce7 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.8.0-43-generic N/A linux-backports-modules-5.8.0-43-generic N/A linux-firmware 1.190.3 SourcePackage: linux UpgradeStatus: Upgraded to groovy on 2021-02-13 (1 days ago) dmi.bios.date: 09/26/2012 dmi.bios.release: 1.82 dmi.bios.vendor: LENOVO dmi.bios.version: 6MET92WW (1.52 ) dmi.board.name: 4349WJK dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.ec.firmware.release: 1.33 dmi.modalias: dmi:bvnLENOVO:bvr6MET92WW(1.52):bd09/26/2012:br1.82:efr1.33:svnLENOVO:pn4349WJK:pvrThinkPadT510:rvnLENOVO:rn4349WJK:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.family: ThinkPad T510 dmi.product.name: 4349WJK dmi.product.version: ThinkPad T510 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1915661/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
