[HTC Sensation] Specialist79:
cat /proc/cmdline (serial no removed):

poweron_status=1 board_pyramid.disable_uart3=0 diag.enabled=0 board_pyramid.debug_uart=0 userdata_sel=0 androidboot.emmc=true androidboot.pagesize=2048 androidboot.lb=0 androidboot.baseband=11.24A.3504.31_M androidboot.cid=HTC__102 androidboot.batt_poweron=good_battery androidboot.carrier=HTC-GER androidboot.mid=PG5813000 androidboot.keycaps=qwerty androidboot.dq=FAIL androidboot.mode=normal androidboot.serialno=<xxx> androidboot.bootloader=1.27.1100 zygote_oneshot=off msm_watchdog.enable=1 console=ttyHSL0 androidboot.hardware=pyramid no_console_suspend=1 maxkhz=1404000 minkhz=192000 gov=ondemand maxscroff=486000 3dgpu=266667000 2dgpu=200000000 s2w=1 scheduler=noop

last_kmsg contains some suspicious entries:

[51072.226562] msm_thermal: ERROR! pre_throttled_max=0, falling back to 1566000
[51072.226684] msm_thermal: Low Thermal Throttling Ended! temp: 29
[51072.226776] msm_thermal: Limiting core0 max frequency to 1566000
[51072.226867] msm_thermal: ERROR! pre_throttled_max=0, falling back to 1566000
[51072.226989] msm_thermal: Low Thermal Throttling Ended! temp: 29
[51072.227050] msm_thermal: Limiting core1 max frequency to 1566000

I also got another spontaneous reboot probably triggered by a stuck GPU:

[52938.774719] ------------[ cut here ]------------
[52938.774902] WARNING: at arch/arm/mach-msm/clock-local.c:306 rcg_clk_enable+0x24/0x40()
[52938.774993] gfx2d0_clk status stuck at 'off'
[52938.775115] Modules linked in: bcm4329 tun kineto_gan
[52938.775604] [<c010c5a0>] (unwind_backtrace+0x0/0xf8) from [<c01a3ba0>] (warn_slowpath_common+0x50/0x11c)
[52938.775756] [<c01a3ba0>] (warn_slowpath_common+0x50/0x11c) from [<c01a3d00>] (warn_slowpath_fmt+0x30/0x40)
[52938.775909] [<c01a3d00>] (warn_slowpath_fmt+0x30/0x40) from [<c0166de8>] (rcg_clk_enable+0x24/0x40)
[52938.776062] [<c0166de8>] (rcg_clk_enable+0x24/0x40) from [<c011b92c>] (clk_enable+0x1cc/0x2c4)
[52938.776214] [<c011b92c>] (clk_enable+0x1cc/0x2c4) from [<c042e658>] (kgsl_pwrctrl_clk+0x78/0x148)
[52938.776306] [<c042e658>] (kgsl_pwrctrl_clk+0x78/0x148) from [<c042ec78>] (kgsl_pwrctrl_wake+0xf0/0x244)
[52938.776458] [<c042ec78>] (kgsl_pwrctrl_wake+0xf0/0x244) from [<c04451bc>] (z180_regwrite+0xbc/0xc4)
[52938.776611] [<c04451bc>] (z180_regwrite+0xbc/0xc4) from [<c0431ec0>] (kgsl_gpummu_default_setstate+0x40/0x84)
[52938.776763] [<c0431ec0>] (kgsl_gpummu_default_setstate+0x40/0x84) from [<c0430580>] (kgsl_setstate+0x40/0x48)
[52938.776916] [<c0430580>] (kgsl_setstate+0x40/0x48) from [<c0445778>] (z180_cmdstream_issueibcmds+0xf8/0x3a0)
[52938.777069] [<c0445778>] (z180_cmdstream_issueibcmds+0xf8/0x3a0) from [<c042bb9c>] (kgsl_ioctl_rb_issueibcmds+0x1c0/0x324)
[52938.777221] [<c042bb9c>] (kgsl_ioctl_rb_issueibcmds+0x1c0/0x324) from [<c042c680>] (kgsl_ioctl+0x124/0x300)
[52938.777313] [<c042c680>] (kgsl_ioctl+0x124/0x300) from [<c0256370>] (do_vfs_ioctl+0x84/0x54c)
[52938.777465] [<c0256370>] (do_vfs_ioctl+0x84/0x54c) from [<c0256870>] (sys_ioctl+0x38/0x5c)
[52938.777618] [<c0256870>] (sys_ioctl+0x38/0x5c) from [<c0106700>] (ret_fast_syscall+0x0/0x30)
[52938.777740] ---[ end trace 33fc47daf6bdc67f ]---

Bricked v1.4, FW 3.33, 3.33-based ROM. Full last_kmsg for a clean boot as well the panicking session attached.