[Samsung Captivate Glide] nemo.:
I experience baseband loss as well when flashing the latest CM JB 4.3 build from bubor. It does not even have

GSM after booting. With the original 4.0.4 firmware I experienced baseband loss from time to

time.

I noticed a few things.

First of all, `dmesg` shows the loss of an usb device repeatedly:

<6>[ 5801.766126] hub 1-0:1.0: USB hub found
<6>[ 5801.766538] hub 1-0:1.0: 1 port detected
<3>[ 5801.841951] tegra_usb_phy_bus_connect: timeout waiting for hsic connect detect
<6>[ 5801.844898] mif: xmm6260_on: xmm6260_on()
<3>[ 5801.845217] xmm_gpio_revers_bias_clear
<6>[ 5802.037072] tegra_usb_phy_bus_reset
<6>[ 5802.042446] tegra_usb_phy_bus_reset:4:USBMODE:3 USBCMD:10005 USBPORTSC1:8001205 USBSTS:80
<6>[ 5802.154629] usb 1-1: new high speed USB device number 2 using tegra-ehci
<3>[ 5802.416690] xmm_gpio_revers_bias_restore
<6>[ 5802.417287] Wake12 for irq=370
<6>[ 5802.417629] mif: link_pm_ioctl: 6f33
<3>[ 5802.417995] cbd: /hsic_xmit_boot: check [BOOTROM] link connected = [0]
<3>[ 5802.714681] usb 1-1: device not accepting address 2, error -71

This seems to be the modem. Something is wrong when initializing.

Starting cbd manually yields the following output:

127|root@android:/efs # cbd -t xmm626x -o t
cbd -t xmm626x -o t
<3>cbd: /main: Start CP Boot Daemon (CBD)
CP Boot Daemon
<3>cbd: /main: start cp boot
<3>cbd: /main: Default Modem type = 1
<3>cbd: /main: Default Boot link = 4
<3>cbd: /main: Default Main link = 4
Cp Boot Daemon
<3>cbd: /main: [MODEM_IF] ggg
5d 2d 00 ea 6c 69 48 55 01 a0 fe fd 02 00 02 00
<3>cbd: /hsic_xmit_boot: check [BOOTROM] link connected = [0]
<3>cbd: /hsic_xmit_boot: check [BOOTROM] link connected = [0]
<3>cbd: /hsic_xmit_boot: check [BOOTROM] link connected = [0]
<3>cbd: /hsic_xmit_boot: check [BOOTROM] link connected = [0]
<3>cbd: /hsic_xmit_boot: check [BOOTROM] link connected = [0]
<3>cbd: /hsic_xmit_boot: check [BOOTROM] link connected = [0]
<3>cbd: /hsic_xmit_boot: check [BOOTROM] link connected = [0]
<3>cbd: /hsic_xmit_boot: check [BOOTROM] link connected = [0]
<3>cbd: /hsic_xmit_boot: check [BOOTROM] link connected = [0]
<3>cbd: /hsic_xmit_boot: check [BOOTROM] link connected = [0]
Segmentation fault

Finally, `logcat -b radio` is a bit more specific:

D/boot ( 2446): <4>cbd: main: Daemon Mode
D/boot ( 2446): <4>cbd: main: EHCI Tegra
D/boot ( 2446): <4>cbd: main: partition number : 7
D/boot ( 2446): <4>cbd: main: partition path : /dev/block/mmcblk0p7
D/boot ( 2446): <4>cbd: main: call boot start
D/boot ( 2446): <4>cbd: start_xmm626x_boot: start
D/boot ( 2446): <4>cbd: update_cp_imgmap: CP img map from default table
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/boot ( 2446): <4>cbd: hsic_xmit_boot: PSI send ----
D/boot ( 2446): <4>cbd: hsic_xmit_psi: Sent ATAT 4 byte
E/use-Rlog/RLOG-RIL( 115): Modem boot timeout
D/use-Rlog/RLOG-RIL( 115): wait xmm6260_boot_hsic boot ready
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/boot ( 2446): <4>cbd: s_read: select TIMEOUT
E/boot ( 2446): <3>cbd: err(No such file or directory) hsic_xmit_psi: ack read fail: 0x00
E/boot ( 2447): <3>cbd: err(No such file or directory) check_debug_level: /mnt/.lfs/debug_level.inf file open fail err = -1
D/boot ( 2447): <4>cbd: main: Daemon Mode
D/boot ( 2447): <4>cbd: main: EHCI Tegra
D/boot ( 2447): <4>cbd: main: partition number : 7
D/boot ( 2447): <4>cbd: main: partition path : /dev/block/mmcblk0p7
D/boot ( 2447): <4>cbd: main: call boot start
D/boot ( 2447): <4>cbd: start_xmm626x_boot: start
D/boot ( 2447): <4>cbd: update_cp_imgmap: CP img map from default table
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/boot ( 2447): <4>cbd: hsic_xmit_boot: PSI send ----
D/boot ( 2447): <4>cbd: hsic_xmit_psi: Sent ATAT 4 byte
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/boot ( 2447): <4>cbd: s_read: select TIMEOUT
E/boot ( 2447): <3>cbd: err(No such file or directory) hsic_xmit_psi: ack read fail: 0x00
E/boot ( 2448): <3>cbd: err(No such file or directory) check_debug_level: /mnt/.lfs/debug_level.inf file open fail err = -1
D/boot ( 2448): <4>cbd: main: Daemon Mode
D/boot ( 2448): <4>cbd: main: EHCI Tegra
D/boot ( 2448): <4>cbd: main: partition number : 7
D/boot ( 2448): <4>cbd: main: partition path : /dev/block/mmcblk0p7
D/boot ( 2448): <4>cbd: main: call boot start
D/boot ( 2448): <4>cbd: start_xmm626x_boot: start
D/boot ( 2448): <4>cbd: update_cp_imgmap: CP img map from default table
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
D/use-Rlog/RLOG-RIL( 115): modem status [ 0x3 ]
E/use-Rlog/RLOG-RIL( 115): Modem boot timeout

It seems to me that the modem initialization goes wrong but I'm not experienced enough

to know why. Any hints are appreciated.

It's also noteworthy that I'm using the ATT version of the i927 with UCLJ3 modem.