| 97 | | |
| 98 | | What todo with a TRAP screen: |
| 99 | | ============================= |
| | 124 | 4.0 Troubleshooting |
| | 125 | ===================== |
| | 126 | |
| | 127 | 4.1 No Sound |
| | 128 | -------------- |
| | 129 | This is typically caused by one of two different issues. Either the speaker |
| | 130 | output levels are set very low (or muted) or the audio device has not not been |
| | 131 | activated (incorrect identification, incorrect/incompatible IRQ, etc.) |
| | 132 | |
| | 133 | To eliminate the first possibility, download the latest LBMix mixer |
| | 134 | application from Hobbes: |
| | 135 | http://hobbes.nmsu.edu/h-search.php?key=lbmix&pushbutton=Search |
| | 136 | and install it. Try to adjust the volume from LBMix and/or the standard volume |
| | 137 | control object. Note that some devices need to have their output levels set at |
| | 138 | each reboot. If adjusting the output levels has no effect, then perhaps the |
| | 139 | hardware is not being properly identified. In that case, ensure that the /V |
| | 140 | option is specified on the DEVICE=x:\MMOS2\UNIAUD32.SYS line in CONFIG.SYS, |
| | 141 | reboot, and at the boot blob (square block in the upper left hand corner of |
| | 142 | the screen) press Alt-F4. This will allow you to step through the CONFIG.SYS |
| | 143 | processing, enabling you to read the output message from the device driver. |
| | 144 | Note the card which has been identified, the detected mixer, and the IRQ being |
| | 145 | used. Compare this information to the hardware you know to be installed, and |
| | 146 | if necessary, perform one of the following two actions: |
| | 147 | a) Force full hardware detection: Reboot, and at the boot blob press |
| | 148 | Alt-F1. At the "Recovery Choices" screen, select "F5 full hardware |
| | 149 | detection" and continue the boot sequence. Review the new output |
| | 150 | from the device driver details to see if your card has been properly |
| | 151 | identified. If that does not resolve the issue, then try the next |
| | 152 | option. |
| | 153 | |
| | 154 | b) Override auto-detection of your card (see _2.4 Device Driver Load |
| | 155 | Options_, above). |
| | 156 | |
| | 157 | Even if the card is being properly detected (or forced), it is possible that |
| | 158 | the IRQ which the system (or ACPI PSD) has assigned to it may be incompatible |
| | 159 | with the hardware. With ACPI systems, it may be necessary to adjust the IRQ in |
| | 160 | ACPI.CFG (see ACPI documentation for proper use of the REMAP directive). Some |
| | 161 | systems may allow the IRQ to be locked in BIOS setup; this may be worth trying. |
| | 162 | |
| | 163 | It is also possible that the proper information is not getting entered into |
| | 164 | MMPM.INI. In this case, follow the appropriate procedure: |
| | 165 | |
| | 166 | a) For eComStation 1.1 - 2.0, start the Multimedia Installer |
| | 167 | (MINSTALL.EXE) and select the option to reset your MMeCS settings. |
| | 168 | Reboot, and re-install Uniaud. |
| | 169 | b) For earlier releases of eComStation and for Warp, uninstall Uniaud |
| | 170 | (see _3.0 Removal_), reboot, and re-install. |
| | 171 | |
| | 172 | 4.2 Distorted Sound |
| | 173 | --------------------- |
| | 174 | Distortion is usually caused in the output section of the audio device, due to |
| | 175 | the preamp circuit overdriving the signal, or due to extremely loud output |
| | 176 | settings causing the noise at the speakers themselves. In some cases, this |
| | 177 | overdrive condition may be addressed by the use of a good mixer application or |
| | 178 | judicious use of the volume control. |
| | 179 | |
| | 180 | Audio distortion may also be caused by device conflicts, typically with PS/2 |
| | 181 | mice. USB devices may also cause these issues, and in both cases, the IRQ does |
| | 182 | not need to directly conflict with the audio hardware. Refer to the notes in |
| | 183 | _4.1 No Sound_ for suggestions on adjusting the IRQ. To test, try commenting |
| | 184 | out the mouse driver in CONFIG.SYS (caution: be sure that you are comfortable |
| | 185 | enough navigating your desktop without a mouse before disabling the device!) |
| | 186 | and rebooting. Try disconnecting all USB devices to determine the source of |
| | 187 | the conflict. |
| | 188 | |
| | 189 | 4.3 Looping Sound |
| | 190 | ------------------- |
| | 191 | |
| | 192 | This is a close cousin to the condition described in _4.2 Distorted Sound_, |
| | 193 | and in fact, is a particular type of distortion. Looping is usually caused by |
| | 194 | a card mis-detection or an IRQ conflict. Review the procedures outlined in |
| | 195 | _4.1 No Sound_ and _4.2 Distorted Sound_ to properly identify your hardware |
| | 196 | and to try to resolve IRQ conflicts. |
| | 197 | |
| | 198 | 4.4 Hang at Boot |
| | 199 | ------------------ |
| | 200 | |
| | 201 | This is most often seen with HDA hardware, and is typically caused by an IRQ |
| | 202 | conflict. Review the procedures outlined in _4.1 No Sound_ and _4.2 Distorted |
| | 203 | Sound_ to properly identify your hardware and to try to resolve IRQ conflicts. |
| | 204 | |
| | 205 | 4.5 Hang at Desktop Start |
| | 206 | --------------------------- |
| | 207 | |
| | 208 | This is typically a problem in uniaud16.sys, and appears to happen more |
| | 209 | frequently when system sounds are enabled and startup events are occurring in |
| | 210 | rapid succession, seemingly" on top of each other." Try booting to a |
| | 211 | maintenance partition, from CD, or even to a command prompt via Alt-F1 (see |
| | 212 | _4.1 No Sound_ for more on Alt-F1), editing CONFIG.SYS to disable Uniaud (see |
| | 213 | _3.0 Removal_), rebooting, and disabling system sound. Edit CONFIG.SYS to |
| | 214 | un-comment the Uniaud device driver lines, and reboot. |
| | 215 | |
| | 216 | Note that when system sounds are disabled at startup, it is often possible to |
| | 217 | re-enable them afterward, however, once the same conditions exist as are |
| | 218 | present during startup (multiple events occurring almost simultaneously), the |
| | 219 | hang is likely to re-manifest itself. |
| | 220 | |
| | 221 | 4.6 Hang During Playback |
| | 222 | -------------------------- |
| | 223 | |
| | 224 | See the notes in _4.5 Hang at Desktop Start_ for some tips. Try limiting the |
| | 225 | number of audio streams attempting to be played at one time. Look for other |
| | 226 | sources of the condition (Flash, defective media, MPlayer codec, etc.) |
| | 227 | |
| | 228 | 4.7 Traps |
| | 229 | ----------- |
| | 230 | |
| | 231 | A typical trap involving Uniaud will be TRAP008, which indicates a direct IRQ |
| | 232 | conflict. Often, these are seen with HDA hardware in ACPI systems, and may |
| | 233 | occur right at system start, even after a complete power cycle (some data does |
| | 234 | not get cleared immediately between hard resets). |
| | 235 | |
| | 236 | Some suggested actions include forcing full hardware detection to ensure that |
| | 237 | Uniaud is indeed seeing the correct device (see _4.1 No Sound_ for |
| | 238 | procedures), or adjusting IRQ(s) to avoid conflicts (see _4.1 No Sound_ and |
| | 239 | _4.2 Distorted Sound_). |
| | 240 | |
| | 241 | To preserve the data from the trap screen, follow this procedure: |