I have similar issues with an AWUS036ACM when connected to a USB3.0 port. When connected to a USB2.0 port it seems to work fine. In particular, on both kernel 5.5.0 and 5.6.13 on a USB3.0 port when running an AP I get the error "mt76x2u: error: mt76x02u_mcu_wait_resp failed with -108". On the same kernels but using a USB2.0 port the AP seems to work properly. On Fri, Jun 26, 2020 at 11:33 PM James <bjlockie@xxxxxxxxx> wrote: > > I have an Alfa AWUS036ACM (Mediatek MT7612U). > My AP keeps dieing. > The error: > mt76x2u: error: mt76x02u_mcu_wait_resp failed with -110 > seems to be common. > > I use it with a build of a OpenWrt on a Raspberry Pi 4 (Broadcom BCM2711 > SoC, ARM Cortex-A72 processor (64bit)). > Linux OpenWrt 5.4.48 #0 SMP Thu Jun 25 00:36:19 2020 aarch64 GNU/Linux > Loading modules backported from Linux version v5.7-rc3-0-g6a8b55ed4056 > > # lsmod | grep mt76 > cfg80211 339968 5 > mt76x02_usb,mt76x02_lib,mt7603e,mt76,mac80211 > mac80211 589824 7 > mt76x2u,mt76x2e,mt76x02_usb,mt76x02_lib,mt7603e,mt76_usb,mt76 > mt76 45056 7 > mt76x2u,mt76x2e,mt76x2_common,mt76x02_usb,mt76x02_lib,mt7603e,mt76_usb > mt76_usb 24576 2 mt76x2u,mt76x02_usb > mt7603e 53248 0 > mt76x02_lib 61440 4 mt76x2u,mt76x2e,mt76x2_common,mt76x02_usb > mt76x02_usb 20480 1 mt76x2u > mt76x2_common 20480 2 mt76x2u,mt76x2e > mt76x2e 20480 0 > mt76x2u 20480 0 > > I bought a powered USB3 hub and removed a USB3 cable in case that is > related but the problem is still there. > > I've been documenting my problems: > https://github.com/openwrt/mt76/issues/405# > Are any of the tracebacks useful? > > I found this: > https://github.com/openwrt/mt76/issues/403 > > > > > > *LorenzoBianconi *commented on May 10 > > > > @petrkalosthis conditions is used to reset the device in case of > > necessary (it is in the vendor sdk). You can try to comment it out and > > see what happen > > > I downloaded > https://d86o2zu8ugzlg.cloudfront.net/mediatek-craft/drivers/MT7612U_DPO_LinuxSTA_3.0.0.1_20140718.tar.bz2 > and there is no "mcu_wait_resp". > > I also found this: > https://github.com/raspberrypi/linux/issues/3014 > > > What 80211.ac USB adapter has the best (most open and compatible) now > (or likely) linux kernel support? >
