Pooja, you are using an unsupported mainline kernel 4.19.0-041900rc4-lowlatency. If you boot back to the official v4.15 kernel do you still have the problem?
Pooja, you are using an unsupported mainline kernel 4.19.0- 041900rc4- lowlatency. If you boot back to the official v4.15 kernel do you still have the problem?