https://bugs.kde.org/show_bug.cgi?id=342056
--- Comment #42 from empyreal <empyr...@ukr.net> --- I need to figure out whether it is hardware issue or not. It’s some sort of interface buffer problem, because changing settings in Windows helped for short period of time. Windows. Mount slow. Copy slow. Offline and disconnected drive. Waited few min. Connected drive and Online. Mount slow. Copying slow. Device Manager => Volumes => Populate. Data received but no help. Mount slow. Copy slow. Very long Shutdown. Windows. Waited few min. Connected USB drive. Mount slow. Copy slow. Noticed that folders, copied on Kubuntu open with lag. Formatted USB drive just in case. Switched buffer settings in Windows. Sometimes it helped USB drive to copy faster, but for short period of time. Speed was unstable. Made few Short DST of SAS-SCSI-FC until device passed in SeaTools. Rescanned. USB 1394 showed up. Copy slow. Disconnected drive. Restarted Windows. Connected drive. Copying started fast, then became slow. Device Manager => Volumes => Populate. Volume data received. Copying became faster. I have no idea how it works, but it shows some effect. Started copying. Starts very slow and then goes fast. Reboot with USB drive. Stuck. Unplugged drive. Rebooted Windows. Connected USB drive. Started copying video files in Total Commander. Started fast then speed dropped to 1 MB/s. Now drive steadily behaves like this: when connected, starts fast copy, the slows down to … KB/s. Drive slows boot and restart. -- You are receiving this mail because: You are watching all bug changes.
