Oi pessoal Eu me encontro em uma situação estranha usando 16.10
Ao conectar unidades USB, via porta usb ou via hub USB 3. Eu acho que só posso conectar duas unidades, elas são detectadas perfeitamente e montadas automaticamente.
No entanto, ao conectar uma terceira unidade, nada acontece.
Esta é minha saída do dmesg. Eu procurei por erros online, mas nada até agora. O mais próximo que encontrei foi este
[ 233.705030] usb 4-2.1.4: new SuperSpeed USB device number 7 using xhci_hcd
[ 233.725706] usb 4-2.1.4: New USB device found, idVendor=0bc2, idProduct=3322
[ 233.725707] usb 4-2.1.4: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[ 233.725708] usb 4-2.1.4: Product: Expansion Desk
[ 233.725709] usb 4-2.1.4: Manufacturer: Seagate
[ 233.725710] usb 4-2.1.4: SerialNumber: NA8ELXQN
[ 233.729792] kworker/1:3: page allocation failure: order:0, mode:0x2604001(GFP_NOIO|GFP_DMA|__GFP_COMP|__GFP_NOTRACK)
[ 233.729794] CPU: 1 PID: 213 Comm: kworker/1:3 Tainted: P OE 4.8.0-28-generic #30-Ubuntu
[ 233.729795] Hardware name: LENOVO 2349SVL/2349SVL, BIOS G1ETB1WW (2.71 ) 08/08/2016
[ 233.729799] Workqueue: usb_hub_wq hub_event
[ 233.729801] 0000000000000286 0000000018bdd6b7 ffff8ab4e033b150 ffffffff95c2fae2
[ 233.729803] 0000000000000000 0000000000000000 ffff8ab4e033b1e0 ffffffff959aa3f1
[ 233.729804] 02604001959bbb59 0000000000000000 0000000000000040 0000000000000012
[ 233.729806] Call Trace:
[ 233.729810] [<ffffffff95c2fae2>] dump_stack+0x63/0x81
[ 233.729811] [<ffffffff959aa3f1>] warn_alloc_failed+0x101/0x160
[ 233.729813] [<ffffffff95c45af8>] ? find_next_bit+0x18/0x20
[ 233.729814] [<ffffffff959aa6d1>] __alloc_pages_slowpath+0x201/0xa60
[ 233.729816] [<ffffffff959ab1e5>] __alloc_pages_nodemask+0x2b5/0x300
[ 233.729818] [<ffffffff959fec25>] alloc_pages_current+0x95/0x140
[ 233.729819] [<ffffffff95a08699>] new_slab+0x419/0x6e0
[ 233.729820] [<ffffffff95a0a210>] ___slab_alloc+0x3a0/0x4b0
[ 233.729822] [<ffffffff95eaf1db>] ? xhci_segment_alloc.isra.25+0xfb/0x140
[ 233.729824] [<ffffffff95c3485f>] ? radix_tree_node_alloc+0x4f/0x90
[ 233.729825] [<ffffffff95a0a340>] __slab_alloc+0x20/0x40
[ 233.729826] [<ffffffff95a0bdf2>] __kmalloc+0x182/0x1e0
[ 233.729827] [<ffffffff95eaf1db>] ? xhci_segment_alloc.isra.25+0xfb/0x140
[ 233.729829] [<ffffffff95eaf1db>] xhci_segment_alloc.isra.25+0xfb/0x140
[ 233.729830] [<ffffffff95eaf263>] xhci_alloc_segments_for_ring+0x43/0x100
[ 233.729832] [<ffffffff95eaf3de>] xhci_ring_alloc.constprop.32+0xbe/0x140
[ 233.729833] [<ffffffff95eb0a9f>] xhci_alloc_stream_info+0x1df/0x3e0
[ 233.729835] [<ffffffff95eb0820>] ? xhci_alloc_command+0x100/0x140
[ 233.729836] [<ffffffff95eac0e7>] xhci_alloc_streams+0x447/0x840
[ 233.729837] [<ffffffff95eabca0>] ? xhci_check_bandwidth+0x370/0x370
[ 233.729838] [<ffffffff95e66d27>] usb_alloc_streams+0xb7/0x110
[ 233.729842] [<ffffffffc183a918>] uas_configure_endpoints+0x148/0x170 [uas]
[ 233.729844] [<ffffffffc183b455>] uas_probe+0x3a5/0x550 [uas]
[ 233.729846] [<ffffffff95e70439>] usb_probe_interface+0x159/0x2d0
[ 233.729848] [<ffffffff95d9dfb3>] driver_probe_device+0x223/0x430
[ 233.729849] [<ffffffff95d9e33c>] __device_attach_driver+0x8c/0x100
[ 233.729850] [<ffffffff95d9e2b0>] ? __driver_attach+0xf0/0xf0
[ 233.729851] [<ffffffff95d9bb67>] bus_for_each_drv+0x67/0xb0
[ 233.729852] [<ffffffff95d9dc1d>] __device_attach+0xdd/0x160
[ 233.729854] [<ffffffff95d9e3f3>] device_initial_probe+0x13/0x20
[ 233.729855] [<ffffffff95d9cdd2>] bus_probe_device+0x92/0xa0
[ 233.729855] [<ffffffff95d9a9d4>] device_add+0x494/0x660
[ 233.729856] [<ffffffff95e5fd7c>] ? usb_enable_lpm+0xdc/0x100
[ 233.729858] [<ffffffff95e6e37c>] usb_set_configuration+0x5ec/0x930
[ 233.729860] [<ffffffff95e7954e>] generic_probe+0x2e/0x80
[ 233.729861] [<ffffffff95e7029e>] usb_probe_device+0x2e/0x70
[ 233.729862] [<ffffffff95d9dfb3>] driver_probe_device+0x223/0x430
[ 233.729863] [<ffffffff95d9e33c>] __device_attach_driver+0x8c/0x100
[ 233.729864] [<ffffffff95d9e2b0>] ? __driver_attach+0xf0/0xf0
[ 233.729865] [<ffffffff95d9bb67>] bus_for_each_drv+0x67/0xb0
[ 233.729866] [<ffffffff95d9dc1d>] __device_attach+0xdd/0x160
[ 233.729867] [<ffffffff95d9e3f3>] device_initial_probe+0x13/0x20
[ 233.729868] [<ffffffff95d9cdd2>] bus_probe_device+0x92/0xa0
[ 233.729869] [<ffffffff95d9a9d4>] device_add+0x494/0x660
[ 233.729871] [<ffffffff95d64e00>] ? perf_trace_urandom_read+0xb0/0x100
[ 233.729872] [<ffffffff95e63465>] usb_new_device+0x275/0x490
[ 233.729873] [<ffffffff95e64a3e>] hub_port_connect+0x50e/0x9d0
[ 233.729874] [<ffffffff95e65858>] hub_event+0x958/0xb10
[ 233.729876] [<ffffffff958b3ff9>] ? sched_clock_cpu+0x99/0xb0
[ 233.729877] [<ffffffff958bcec3>] ? put_prev_entity+0x33/0x3e0
[ 233.729879] [<ffffffff9589d85c>] process_one_work+0x1fc/0x4b0
[ 233.729880] [<ffffffff9589db5b>] worker_thread+0x4b/0x500
[ 233.729881] [<ffffffff9589db10>] ? process_one_work+0x4b0/0x4b0
[ 233.729882] [<ffffffff9589db10>] ? process_one_work+0x4b0/0x4b0
[ 233.729883] [<ffffffff958a3e58>] kthread+0xd8/0xf0
[ 233.729886] [<ffffffff9609a25f>] ret_from_fork+0x1f/0x40
[ 233.729887] [<ffffffff958a3d80>] ? kthread_create_on_node+0x1e0/0x1e0
[ 233.729888] Mem-Info:
[ 233.729890] active_anon:315540 inactive_anon:56656 isolated_anon:0
active_file:156526 inactive_file:175127 isolated_file:0
unevictable:16 dirty:527 writeback:0 unstable:0
slab_reclaimable:57963 slab_unreclaimable:19955
mapped:99479 shmem:14573 pagetables:10274 bounce:0
free:3207710 free_pcp:671 free_cma:0
[ 233.729893] Node 0 active_anon:1262160kB inactive_anon:226624kB active_file:626104kB inactive_file:700508kB unevictable:64kB isolated(anon):0kB isolated(file):0kB mapped:397916kB dirty:2108kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 270336kB anon_thp: 58292kB writeback_tmp:0kB unstable:0kB pages_scanned:0 all_unreclaimable? no
[ 233.729894] Node 0 DMA free:64kB min:64kB low:80kB high:96kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15984kB managed:15900kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:15836kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 233.729896] lowmem_reserve[]: 0 2670 15684 15684 15684
[ 233.729898] Node 0 DMA32 free:2779760kB min:11492kB low:14364kB high:17236kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:2846280kB managed:2780712kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:916kB local_pcp:0kB free_cma:0kB
[ 233.729900] lowmem_reserve[]: 0 0 13013 13013 13013
[ 233.729902] Node 0 Normal free:10051016kB min:56020kB low:70024kB high:84028kB active_anon:1262160kB inactive_anon:226624kB active_file:626104kB inactive_file:700508kB unevictable:64kB writepending:2108kB present:13604864kB managed:13329440kB mlocked:64kB slab_reclaimable:231852kB slab_unreclaimable:63984kB kernel_stack:11472kB pagetables:41096kB bounce:0kB free_pcp:1768kB local_pcp:520kB free_cma:0kB
[ 233.729904] lowmem_reserve[]: 0 0 0 0 0
[ 233.729906] Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 1*64kB (U) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 64kB
[ 233.729911] Node 0 DMA32: 2*4kB (M) 3*8kB (UM) 1*16kB (M) 2*32kB (M) 2*64kB (M) 1*128kB (M) 3*256kB (UM) 3*512kB (UM) 4*1024kB (UM) 4*2048kB (UM) 675*4096kB (M) = 2779760kB
[ 233.729917] Node 0 Normal: 70*4kB (UM) 80*8kB (UM) 103*16kB (UM) 66*32kB (UM) 43*64kB (UM) 17*128kB (UME) 52*256kB (UME) 46*512kB (UME) 30*1024kB (U) 22*2048kB (UM) 2424*4096kB (UM) = 10050952kB
[ 233.729925] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[ 233.729925] 346224 total pagecache pages
[ 233.729926] 0 pages in swap cache
[ 233.729927] Swap cache stats: add 0, delete 0, find 0/0
[ 233.729927] Free swap = 8388604kB
[ 233.729927] Total swap = 8388604kB
[ 233.729928] 4116782 pages RAM
[ 233.729928] 0 pages HighMem/MovableOnly
[ 233.729928] 85269 pages reserved
[ 233.729929] 0 pages cma reserved
[ 233.729929] 0 pages hwpoisoned
[ 233.729931] SLUB: Unable to allocate memory on node -1, gfp=0x2408001(GFP_NOIO|GFP_DMA|__GFP_ZERO)
[ 233.729931] cache: dma-kmalloc-1024, object size: 1024, buffer size: 1024, default order: 3, min order: 0
[ 233.729932] node 0: slabs: 484, objs: 15488, free: 0
[ 233.730768] uas: probe of 4-2.1.4:1.0 failed with error -12