# USB boot delay

**URL:** <https://community.solid-run.com/t/usb-boot-delay/762>\
**Category:** NXP LX2160\
**Created:** [November 17, 2023, 5:58pm UTC](https://community.solid-run.com/t/usb-boot-delay/762 "2023-11-17T17:58:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![joema](https://avatars.discourse-cdn.com/v4/letter/j/a9adbd/32.png) [@joema](https://community.solid-run.com/u/joema)\
**Post date:** [November 17, 2023, 5:58pm UTC](https://community.solid-run.com/t/usb-boot-delay/762/1 "2023-11-17T17:58:53Z")

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We have USB boot working, but during boot, it seems USB is detected with a delay of 30 seconds. Is this expected? example:

[5.657103] sfp sfp-0: Host maximum power 2.0W  
[5.661714] sfp sfp-0: No tx\_disable pin: SFP modules will always be emitting.  
[5.669457] libphy: SFP I2C Bus: probed  
[5.673331] sfp sfp-1: Host maximum power 2.0W  
[5.677899] sfp sfp-1: No tx\_disable pin: SFP modules will always be emitting.  
[5.685628] libphy: SFP I2C Bus: probed  
[5.689500] sfp sfp-2: Host maximum power 2.0W  
[5.694078] sfp sfp-2: No tx\_disable pin: SFP modules will always be emitting.  
[5.701786] libphy: SFP I2C Bus: probed  
[5.705658] sfp sfp-3: Host maximum power 2.0W  
[5.710225] sfp sfp-3: No tx\_disable pin: SFP modules will always be emitting.  
[5.964404] fsl\_dpaa2\_eth dpni.0 (unnamed net\_device) (uninitialized): PHY [0x0000000008b96000:01] driver [Qualcomm Atheros AR8035] (irq=POLL)  
[5.978326] fsl\_dpaa2\_eth dpni.0: Probed interface eth0  
[5.987191] input: gpio-keys as /devices/platform/gpio-keys/input/input0  
[5.995783] ALSA device list:  
[5.998748] No soundcards found.  
[36.031185] sd 4:0:0:0: tag#13 uas\_eh\_abort\_handler 0 uas-tag 1 inflight: CMD IN  
[36.038666] sd 4:0:0:0: tag#13 CDB: opcode=0x12 12 01 00 00 40 00  
[36.059183] scsi host4: uas\_eh\_device\_reset\_handler start  
[36.143508] usb 4-1.2: reset SuperSpeed Gen 1 USB device number 3 using xhci-hcd  
[36.169278] scsi host4: uas\_eh\_device\_reset\_handler success  
[36.187620] sd 4:0:0:0: [sda] 976773168 512-byte logical blocks: (500 GB/466 GiB)  
[36.195238] sd 4:0:0:0: [sda] Write Protect is off  
[36.200254] sd 4:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn’t support DPO or FUA  
[36.209576] sd 4:0:0:0: [sda] Optimal transfer size 33553920 bytes  
[36.217549] sda: sda1 sda2  
[36.221924] sd 4:0:0:0: [sda] Attached SCSI disk

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<div class="post-metadata">

**Author:** ![jnettlet](https://dub1.discourse-cdn.com/flex005/user_avatar/community.solid-run.com/jnettlet/32/62_2.png) [@jnettlet](https://community.solid-run.com/u/jnettlet)\
**Post date:** [November 20, 2023, 5:36am UTC](https://community.solid-run.com/t/usb-boot-delay/762/2 "2023-11-20T05:36:38Z")

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That seems longer than usual, but I also see that your specific drive is throwing a UAS error. I have seen other drives have issues with the Linux UAS driver, so please test by disabling UAS for your drive and see if it helps. This is well documented on the web on pages like, [How to disable USB Attached Storage (UAS) - Leo's Notes](https://leo.leung.xyz/wiki/How_to_disable_USB_Attached_Storage_(UAS))