# Problem with Using integrated logic analyzer (ILA) for Debugging with PYNQ

**URL:** <https://discuss.pynq.io/t/problem-with-using-integrated-logic-analyzer-ila-for-debugging-with-pynq/435>\
**Category:** Support\
**Created:** [September 4, 2019, 9:32am UTC](https://discuss.pynq.io/t/problem-with-using-integrated-logic-analyzer-ila-for-debugging-with-pynq/435 "2019-09-04T09:32:16Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![parsonsk](https://avatars.discourse-cdn.com/v4/letter/p/6bbea6/32.png) [@parsonsk](https://discuss.pynq.io/u/parsonsk)\
**Post date:** [September 19, 2019, 2:37pm UTC](https://discuss.pynq.io/t/problem-with-using-integrated-logic-analyzer-ila-for-debugging-with-pynq/435/6 "2019-09-19T14:37:38Z")

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OK, it looks like it’s possible to fix this without recompiling PYNQ. Add a new file “uEnv.txt” to the SD card with the following line:  
`bootargs=root=/dev/mmcblk0p2 rw earlyprintk rootfstype=ext4 rootwait devtmpfs.mount=1 uio_pdrv_genirq.of_id="generic-uio" clk_ignore_unused cpuidle.off=1`

This adds cpuidle.off=1 to the rest of the default bootargs found from [PYNQ/pynq\_bootargs.dtsi at master · Xilinx/PYNQ · GitHub](https://github.com/Xilinx/PYNQ/blob/master/sdbuild/boot/meta-pynq/recipes-bsp/device-tree/files/pynq_bootargs.dtsi)

Now the hardware manager seems to work and so does the Jupyter Notebook interface.

When you boot, you should see “Loaded environment from uEnv.txt” in the uBoot messages on the serial port.

Some info from:  
[https://forums.xilinx.com/t5/Embedded-Boot-and-Configuration/Not-Able-to-Debug-using-Hardware-Manager-in-ZCU102-revision-1-1/td-p/852542](https://forums.xilinx.com/t5/Embedded-Boot-and-Configuration/Not-Able-to-Debug-using-Hardware-Manager-in-ZCU102-revision-1-1/td-p/852542)

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