like Chito Tuason I have MSI Wind U270 and I have the same problem on Arch x64:
[ 197.670269] usb 1-3: new high-speed USB device number 4 using ehci_hcd [ 197.913263] usbcore: registered new interface driver uas [ 197.929246] Initializing USB Mass Storage driver... [ 197.929551] scsi7 : usb-storage 1-3:1.0 [ 197.929818] usbcore: registered new interface driver usb-storage [ 197.929822] USB Mass Storage support registered. [ 199.343995] scsi 7:0:0:0: Direct-Access JetFlash Transcend 8GB 1100 PQ: 0 ANSI: 0 CCS [ 199.345686] sd 7:0:0:0: [sdc] 15826944 512-byte logical blocks: (8.10 GB/7.54 GiB) [ 199.346525] sd 7:0:0:0: [sdc] Write Protect is off [ 199.346538] sd 7:0:0:0: [sdc] Mode Sense: 43 00 00 00 [ 199.347368] sd 7:0:0:0: [sdc] No Caching mode page present [ 199.347377] sd 7:0:0:0: [sdc] Assuming drive cache: write through [ 199.351994] sd 7:0:0:0: [sdc] No Caching mode page present [ 199.352005] sd 7:0:0:0: [sdc] Assuming drive cache: write through [ 199.353464] sdc: sdc1 [ 199.357526] sd 7:0:0:0: [sdc] No Caching mode page present [ 199.357535] sd 7:0:0:0: [sdc] Assuming drive cache: write through [ 199.357542] sd 7:0:0:0: [sdc] Attached SCSI removable disk [ 228.926361] ehci_hcd 0000:00:12.2: force halt; handshake ffffc90000c1e024 00004000 00000000 -> -110 [ 228.926371] ehci_hcd 0000:00:12.2: HC died; cleaning up [ 228.926405] usb 1-3: USB disconnect, device number 4 [ 228.990104] sd 7:0:0:0: [sdc] Unhandled error code [ 228.990113] sd 7:0:0:0: [sdc] Result: hostbyte=0x01 driverbyte=0x00 [ 228.990120] sd 7:0:0:0: [sdc] CDB: cdb[0]=0x2a: 2a 00 00 00 96 8e 00 00 f0 00 [ 228.990136] end_request: I/O error, dev sdc, sector 38542 [ 228.992426] sd 7:0:0:0: [sdc] Unhandled error code [ 228.992435] sd 7:0:0:0: [sdc] Result: hostbyte=0x01 driverbyte=0x00 [ 228.992442] sd 7:0:0:0: [sdc] CDB: cdb[0]=0x2a: 2a 00 00 00 97 7e 00 00 f0 00 [ 228.992458] end_request: I/O error, dev sdc, sector 38782 [ 228.993004] FAT-fs (sdc1): unable to read inode block for updating (i_pos 494224) [ 228.993275] FAT-fs (sdc1): bread failed in fat_clusters_flush [ 228.995042] FAT-fs (sdc1): Directory bread(block 30888) failed [ 228.995080] FAT-fs (sdc1): Directory bread(block 30889) failed [ 229.037070] usb 1-4: USB disconnect, device number 3 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/795626 Title: ehci_hcd fatal error - USB devices randomly crash To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/795626/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs