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kellerman

Member

From: Latvia

Registered: 2011-07-20

Posts: 111

Firmware problems for it9135 DVB-T capture chip.

Hello!
I had a problem with my dvb-t usb tuner not beeing recognised so I installed this package from AUR  as I have exactly the same chip. After that dmesg told that the firmware is now accepted, but the device connects, device file appears at /dev/dvb , but it disconnects and reconnects every 1-2 seconds. The following messages appear in the output of dmesg repeatably all the time while the device is plugged in:

[  788.914390] dvb-usb: ITE 9135(9006) Generic successfully deinitialized and disconnected.
[  789.072420] usb 3-1: reset high-speed USB device number 3 using xhci_hcd
[  789.088219] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff88015719d600
[  789.088231] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff88015719d640
[  789.088238] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff880153057740
[  789.088245] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff88015719d680
[  789.088251] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff88015719d6c0
[  789.088273] usb 3-1: ep 0x81 - rounding interval to 32768 microframes, ep desc says 0 microframes
[  789.088282] usb 3-1: ep 0x2 - rounding interval to 32768 microframes, ep desc says 0 microframes
[  789.088291] usb 3-1: ep 0x84 - rounding interval to 32768 microframes, ep desc says 0 microframes
[  789.088302] usb 3-1: ep 0x85 - rounding interval to 32768 microframes, ep desc says 0 microframes
[  789.089575] it913x: Chip Version=02 Chip Type=9135
[  789.090032] it913x: Firmware Version 52887808
[  789.091295] it913x: Remote HID mode NOT SUPPORTED
[  789.091671] it913x: Dual mode=0 Tuner Type=60
[  789.091676] dvb-usb: found a 'ITE 9135(9006) Generic' in warm state.
[  789.091785] dvb-usb: will use the device's hardware PID filter (table count: 31).
[  789.092015] DVB: registering new adapter (ITE 9135(9006) Generic)
[  789.092671] it913x-fe: ADF table value	:00
[  789.095977] it913x-fe: Crystal Frequency :12000000 Adc Frequency :20250000 ADC X2: 01
[  789.122923] it913x-fe: Tuner LNA type :60
[  789.242858] DVB: registering adapter 0 frontend 0 (ITE 9135(9006) Generic_1)...
[  789.243007] dvb-usb: ITE 9135(9006) Generic successfully initialized and connected.
[  789.243008] it913x: DEV registering device driver

I cant understand why this is happening and didn't see much similar things on the internet, so maybe someone can try helping out! Thanks and I hope this is the correct place to post this topic.
I noticed that when I try to open the device (when it isn't in disconnected state), this logging stops, but for example with VLC I can't get any picture.
Also I get the following lines on boot, maybe they are causing some of this:

usb 1-1.1: string descriptor 0 read error: -22 (shows up every time, doesnt matter if there are any usb devices connected or not)
sdhci-pci 0000:02:00.1: Invalid iomem size. You may experience problems.

Last edited by kellerman (2012-08-23 00:21:47)