Just retested on a fresh install of 15.04 x64 with the nvidia-346 drivers, problem still exists. In between the two nvidia-smi runs shown, I just switched to the text console with ctl-alt-f1, and then switched back to X.
graeme@galvatron:~⟫ nvidia-smi Tue Aug 11 15:48:00 2015 +------------------------------------------------------+ | NVIDIA-SMI 346.59 Driver Version: 346.59 | |-------------------------------+----------------------+----------------------+ | GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC | | Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. | |===============================+======================+======================| | 0 GeForce GTX 960 Off | 0000:01:00.0 N/A | N/A | | 0% 58C P8 N/A / N/A | 1148MiB / 2047MiB | N/A Default | +-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+ | Processes: GPU Memory | | GPU PID Type Process name Usage | |=============================================================================| | 0 C+G Not Supported | +-----------------------------------------------------------------------------+ graeme@galvatron:~⟫ nvidia-smi Tue Aug 11 15:48:08 2015 +------------------------------------------------------+ | NVIDIA-SMI 346.59 Driver Version: 346.59 | |-------------------------------+----------------------+----------------------+ | GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC | | Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. | |===============================+======================+======================| | 0 GeForce GTX 960 Off | 0000:01:00.0 N/A | N/A | | 0% 59C P0 N/A / N/A | 526MiB / 2047MiB | N/A Default | +-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+ | Processes: GPU Memory | | GPU PID Type Process name Usage | |=============================================================================| | 0 C+G Not Supported | +-----------------------------------------------------------------------------+
Just retested on a fresh install of 15.04 x64 with the nvidia-346 drivers, problem still exists. In between the two nvidia-smi runs shown, I just switched to the text console with ctl-alt-f1, and then switched back to X.
graeme@galvatron:~⟫ nvidia-smi ------- ------- ------- ------- ------- ------- ------+ ------- ------- ------- ----+-- ------- ------- ------+ ------- ------- ------- -+ ======= ======= ======= ====+== ======= ======= ======+ ======= ======= ======= =| ------- ------- ------- ----+-- ------- ------- ------+ ------- ------- ------- -+
Tue Aug 11 15:48:00 2015
+------
| NVIDIA-SMI 346.59 Driver Version: 346.59 |
|------
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
|======
| 0 GeForce GTX 960 Off | 0000:01:00.0 N/A | N/A |
| 0% 58C P8 N/A / N/A | 1148MiB / 2047MiB | N/A Default |
+------
+------ ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- -+ ======= ======= ======= ======= ======= ======= ======= ======= ======= ======= =| ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- -+ ------- ------- ------- ------- ------- ------- ------+ ------- ------- ------- ----+-- ------- ------- ------+ ------- ------- ------- -+ ======= ======= ======= ====+== ======= ======= ======+ ======= ======= ======= =| ------- ------- ------- ----+-- ------- ------- ------+ ------- ------- ------- -+
| Processes: GPU Memory |
| GPU PID Type Process name Usage |
|======
| 0 C+G Not Supported |
+------
graeme@galvatron:~⟫ nvidia-smi
Tue Aug 11 15:48:08 2015
+------
| NVIDIA-SMI 346.59 Driver Version: 346.59 |
|------
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
|======
| 0 GeForce GTX 960 Off | 0000:01:00.0 N/A | N/A |
| 0% 59C P0 N/A / N/A | 526MiB / 2047MiB | N/A Default |
+------
+------ ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- -+ ======= ======= ======= ======= ======= ======= ======= ======= ======= ======= =| ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- -+
| Processes: GPU Memory |
| GPU PID Type Process name Usage |
|======
| 0 C+G Not Supported |
+------