Comment 6 for bug 1839693

 Thank you so much for the detailed steps. I will try this tonight and let you know if the USB wifi card starts working again.

    On Monday, August 12, 2019, 11:00:44 PM EDT, Po-Hsu Lin <email address hidden> wrote:

 Hi,
Please:
1. Create a new directory in your file browser
2. Download all the *.deb file in the link, put them into that new directory.
3. In that directory, right click (not on files, but anywhere else) will show you an option "Open in Terminal"
4. In the newly opened terminal, execute the following command: "sudo dpkg -i *.deb"
5. After it's done, reboot and see if the p52usb module works for you or not.

This test kernel installed on your system will be removed in the future
during the upgrade process.

Thanks

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Title:
  p54usb module in linux-modules-extra-5.0.0-23-generic does not work

Status in linux-hwe package in Ubuntu:
  Incomplete

Bug description:
  I am using the Product: Dell Wireless 1450 Dual-band (802.11a/b/g) USB
  2.0 Adapter

  This relies on the p54usb driver. It works great on kernel 4.18. I
  upgraded to 5.0.0-3 and the device fails to start.

  On the older kernel, things seem good:

  [ 1255.546620] usb 3-1: new high-speed USB device number 3 using xhci_hcd
  [ 1255.704106] usb 3-1: New USB device found, idVendor=413c, idProduct=8104, bcdDevice=10.50
  [ 1255.704110] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
  [ 1255.704112] usb 3-1: Product: Dell Wireless 1450 Dual-band (802.11a/b/g) USB 2.0 Adapter
  [ 1255.704115] usb 3-1: Manufacturer: DELL
  [ 1255.830808] usb 3-1: reset high-speed USB device number 3 using xhci_hcd
  [ 1255.979753] usb 3-1: Loading firmware file isl3887usb
  [ 1255.980055] ieee80211 phy1: p54 detected a LM87 firmware
  [ 1255.980058] p54: rx_mtu reduced from 3240 to 2384
  [ 1255.980060] ieee80211 phy1: FW rev 2.13.25.0 - Softmac protocol 5.9
  [ 1255.980063] ieee80211 phy1: cryptographic accelerator WEP:YES, TKIP:YES, CCMP:YES
  [ 1256.974586] ieee80211 phy1: hwaddr 00:14:a5:c6:56:ca, MAC:isl3892 RF:Xbow
  [ 1256.976368] ieee80211 phy1: Selected rate control algorithm 'minstrel_ht'
  [ 1256.976974] usb 3-1: is registered as 'phy1'
  [ 1256.981866] p54usb 3-1:1.0 wlx0014a5c656ca: renamed from wlan0

  I'm using:

  Description:    Ubuntu 18.04.3 LTS
  Release:    18.04

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